Space / Astronomy: Most Popular Articles
These articles are the most popular over the last month.
Brightest Stars
Stars are massive shining spheres of hot gas, the closest of which is our Sun. Stars are primarily made of hydrogen, smaller amounts of helium, and trace amounts of other elements. Even the most abundant of the other elements present in stars (oxygen, carbon, neon, and nitrogen) are only present in very small quantities. Those stars which you see with your naked eye in the night sky all belong to the Milky Way Galaxy, the huge system of stars that contains our solar system.
Stars are massive shining spheres of hot gas, the closest of which is our Sun. Stars are primarily made of hydrogen, smaller amounts of helium, and trace amounts of other elements. Even the most abundant of the other elements present in stars (oxygen, carbon, neon, and nitrogen) are only present in very small quantities. Those stars which you see with your naked eye in the night sky all belong to the Milky Way Galaxy, the huge system of stars that contains our solar system.
Solar Flare Conspiracy
Countless media outlets have been reporting that the Sun is gearing up for a massive solar storm that would disrupt communications, electronic devises and possibly power grids all over the world. Is this a sign that the 2012 prophecy is true? Was there any truth to the events in the blockbuster movie 2012?
Countless media outlets have been reporting that the Sun is gearing up for a massive solar storm that would disrupt communications, electronic devises and possibly power grids all over the world. Is this a sign that the 2012 prophecy is true? Was there any truth to the events in the blockbuster movie 2012?
How to Become An Astronaut
Many of us dreamed of becoming astronauts when we were young. Some of us never got over that dream. When John Glenn rode the shuttle in 1998 at the age of 77, it breathed new hope into many would-be astronauts. So, how do you become an astronaut? Let's discover the path, together.
Many of us dreamed of becoming astronauts when we were young. Some of us never got over that dream. When John Glenn rode the shuttle in 1998 at the age of 77, it breathed new hope into many would-be astronauts. So, how do you become an astronaut? Let's discover the path, together.
Types of Stars
When we think of stars we usually imagine our Sun. But the simple fact is that the Universe is made up of many different types of stars. In fact looking into the heavens most stars look very different, and some aren't really stars at all. So here is a run down of the most common types of stars in the galaxy.
When we think of stars we usually imagine our Sun. But the simple fact is that the Universe is made up of many different types of stars. In fact looking into the heavens most stars look very different, and some aren't really stars at all. So here is a run down of the most common types of stars in the galaxy.
10 Things About Mercury
Named after the Roman god of commerce, travel and thievery, Mercury is the second smallest planet in the solar system, larger only than Pluto, the most distant planet in our solar system. If Earth were the size of a baseball, Mercury would be the size of a golf ball. Viewed from Mercury, the Sun would look almost three times as large as it does from Earth.
Named after the Roman god of commerce, travel and thievery, Mercury is the second smallest planet in the solar system, larger only than Pluto, the most distant planet in our solar system. If Earth were the size of a baseball, Mercury would be the size of a golf ball. Viewed from Mercury, the Sun would look almost three times as large as it does from Earth.
10 Things About Earth
Earth, our home planet, is the only planet whose name is not derived from Greek/Roman mythology. In Roman Mythology, the goddess of the Earth was Tellus - the fertile soil, while the Greek goddes was Gaia, terra mater - Mother Earth. The name we use today, Earth, comes from Old English and Germanic.
Earth, our home planet, is the only planet whose name is not derived from Greek/Roman mythology. In Roman Mythology, the goddess of the Earth was Tellus - the fertile soil, while the Greek goddes was Gaia, terra mater - Mother Earth. The name we use today, Earth, comes from Old English and Germanic.
Facts About Uranus
Uranus is one of the most interesting objects in the night sky, and is absolutely beautiful to view through a telescope. Here we take a look at the top 10 most interesting facts about Uranus.
Uranus is one of the most interesting objects in the night sky, and is absolutely beautiful to view through a telescope. Here we take a look at the top 10 most interesting facts about Uranus.
Top 10 Closest Stars
Stars are balls of mostly hydrogen and helium gas that shine extremely brightly. Stars are so massive that their cores are extremely dense and hot. You can see thousands of stars when you look up at night. Here are the Top 10 Closest Stars to our solar system.
Stars are balls of mostly hydrogen and helium gas that shine extremely brightly. Stars are so massive that their cores are extremely dense and hot. You can see thousands of stars when you look up at night. Here are the Top 10 Closest Stars to our solar system.
Origin of the Universe
It was only recently discoverd that the Universe even had a beginning. Now, scientists are trying to solve the mysteries of the early Universe. The leading theory to explain how the Universe came into existence is known as the Big Bang theory. However, there are still many things that the Big Bang theory struggles to explain.
It was only recently discoverd that the Universe even had a beginning. Now, scientists are trying to solve the mysteries of the early Universe. The leading theory to explain how the Universe came into existence is known as the Big Bang theory. However, there are still many things that the Big Bang theory struggles to explain.
Astronomy Facts
Even though man has studied the heavens for thousands of years, we still know very little about the Universe we live in. And as we continue to learn more, we are consistently amazed, and sometimes confused, by what we learn. Here is a collection of amazing, interesting, and strange facts about our Universe.
Even though man has studied the heavens for thousands of years, we still know very little about the Universe we live in. And as we continue to learn more, we are consistently amazed, and sometimes confused, by what we learn. Here is a collection of amazing, interesting, and strange facts about our Universe.
10 Things About Mars
Named for the Roman god of War, Mars probably got this name due to its red color. It is sometimes referred to as the Red Planet. The name of the month March derives from Mars.
Named for the Roman god of War, Mars probably got this name due to its red color. It is sometimes referred to as the Red Planet. The name of the month March derives from Mars.
10 Things About the Sun
Our Sun has inspired mythology in almost all cultures, including ancient Egyptians, Aztecs, Native Americans, and Chinese. Our Sun is actually the closest star to Earth. The Sun is a massive shining sphere of hot gas. The connection and interaction between the Sun and the Earth drive the seasons, currents in the ocean, weather, and climate.
Our Sun has inspired mythology in almost all cultures, including ancient Egyptians, Aztecs, Native Americans, and Chinese. Our Sun is actually the closest star to Earth. The Sun is a massive shining sphere of hot gas. The connection and interaction between the Sun and the Earth drive the seasons, currents in the ocean, weather, and climate.
10 Things About Venus
Venus whose Greek equivalent was Aphrodite was the Roman goddess of love and beauty. Venus probably got its name from being the brightest object in the sky except for the Sun and the Moon. Venus has always been considered a feminine planet, with many legends and stories concerning its inhabitants. Even one modern doctor says that women are from Venus.
Venus whose Greek equivalent was Aphrodite was the Roman goddess of love and beauty. Venus probably got its name from being the brightest object in the sky except for the Sun and the Moon. Venus has always been considered a feminine planet, with many legends and stories concerning its inhabitants. Even one modern doctor says that women are from Venus.
Biography of Neil Armstrong
It was July 20, 1969 when Neil Armstrong spoke what must be considered the most famous words of the 20th
It was July 20, 1969 when Neil Armstrong spoke what must be considered the most famous words of the 20th
Venus
Venus, the second planet from the Sun, is often referred to as Earth's Sister. While similar in size to Earth, the atmosphere and living conditions on the planet are vastly different. With a very thick atmosphere, the pressure on the surface is nearly 90 times greater than on Earth. The thick atmosphere also makes the planet very hot (nearly 900 degrees).
Venus, the second planet from the Sun, is often referred to as Earth's Sister. While similar in size to Earth, the atmosphere and living conditions on the planet are vastly different. With a very thick atmosphere, the pressure on the surface is nearly 90 times greater than on Earth. The thick atmosphere also makes the planet very hot (nearly 900 degrees).
Solar Flare History
NASA is predicting that the coming solar maximum could produce very energetic solar flares and coronal mass ejecta. These events have the potential to cause significant damage to our power grid as well as our orbiting satellites. But how do we know what to expect?
NASA is predicting that the coming solar maximum could produce very energetic solar flares and coronal mass ejecta. These events have the potential to cause significant damage to our power grid as well as our orbiting satellites. But how do we know what to expect?
Earth Pictures Gallery
Discover Earth Pictures and images in this Earth Pictures Gallery. These Earth pictures are awe inspiring and tell a story about our home planet, Earth.
Discover Earth Pictures and images in this Earth Pictures Gallery. These Earth pictures are awe inspiring and tell a story about our home planet, Earth.
Top 10 Closest Stars to Earth
Naturally our Sun is the closest star to Earth. But beyond that most stars seem impossibly far away. But how close are our nearest neighbors. Here we take a look at the ten closest star systems to Earth.
Naturally our Sun is the closest star to Earth. But beyond that most stars seem impossibly far away. But how close are our nearest neighbors. Here we take a look at the ten closest star systems to Earth.
Astronomy 101
Astronomy 101 - This basic Astronomy course was designed for those who have an interest in but little education in astronomy. Learn the basics of astronomy here.
Astronomy 101 - This basic Astronomy course was designed for those who have an interest in but little education in astronomy. Learn the basics of astronomy here.
What is a Moon?
What is a moon? It's a simple question that may, on the surface, have an obvious answer. One has to do little more than look up in the night sky on clear evenings to see an example of such an object. But when it comes to defining these magnificent objects, the answer may not be so clear.
What is a moon? It's a simple question that may, on the surface, have an obvious answer. One has to do little more than look up in the night sky on clear evenings to see an example of such an object. But when it comes to defining these magnificent objects, the answer may not be so clear.
30 Minute Rocket
You can make a 30 Minute Rocket with straws and a soda bottle. What you need: plastic soda pop bottle, one thin drinking straw, one thick drinking, straw, tape, clay, scissors, and copy or computer paper. Follow the instructions for the 30 Minute Rocket. Give the bottle a quick squeeze. You have an air bottle rocket!
You can make a 30 Minute Rocket with straws and a soda bottle. What you need: plastic soda pop bottle, one thin drinking straw, one thick drinking, straw, tape, clay, scissors, and copy or computer paper. Follow the instructions for the 30 Minute Rocket. Give the bottle a quick squeeze. You have an air bottle rocket!
United States Astronomy Schools - Colleges and Universities With Astronomy Degree Programs in the US
Guide to colleges and universities in the United States with astronomy degree programs. Learn where you can earn a degree in astronomy or physics with an astronomy track.
Guide to colleges and universities in the United States with astronomy degree programs. Learn where you can earn a degree in astronomy or physics with an astronomy track.
Moon Hoax
Over the last several decades the Moon landings of the late 60s and early 70s have garnered much scrutiny. Some have argued that it would have been physically and technologically impossible to land men on the Moon and return them home. Was it all a hoax? I'll discuss the claims of the conspiracy theorists and let you determine for your self if man really landed on the Moon. Did you think of an issue I didn't address? Send me an email and I will be sure to add it.
Over the last several decades the Moon landings of the late 60s and early 70s have garnered much scrutiny. Some have argued that it would have been physically and technologically impossible to land men on the Moon and return them home. Was it all a hoax? I'll discuss the claims of the conspiracy theorists and let you determine for your self if man really landed on the Moon. Did you think of an issue I didn't address? Send me an email and I will be sure to add it.
Shuttle Challenger Disaster
When the Challenger disaster occurred, it exploded killing all aboard, it shocked the nation, started a NASA investigation, and led to many changes in the shuttle program. Here, we look back at the Challenger disaster to see what happened. Most of us remember where we were when we learned of the Challenger disaster.
When the Challenger disaster occurred, it exploded killing all aboard, it shocked the nation, started a NASA investigation, and led to many changes in the shuttle program. Here, we look back at the Challenger disaster to see what happened. Most of us remember where we were when we learned of the Challenger disaster.
Space Music - Space Songs
Top ten rock - pop songs with a space theme including lyrics. These rock - pop songs including lyrics are all dedicated to the space age.
Top ten rock - pop songs with a space theme including lyrics. These rock - pop songs including lyrics are all dedicated to the space age.
Apollo 13
Apollo 13 was the 3rd scheduled lunar launch, carrying Jim Lovell, Fred Haize, & Jack Swigert to the moon. An explosion occurred, endangering the Apollo 13 Lunar Landing mission & astronauts Jim Lovell, Fred Haize, & Jack Swigert, the Apollo 13 space exploration mission became a race for survival. As NASA experts & contractors struggled to come up with solutions, the Apollo 13 astronauts; Jim Lovell, Fred Haize, & Jack Swigert; struggled to survive. The successful failure of space exploration.
Apollo 13 was the 3rd scheduled lunar launch, carrying Jim Lovell, Fred Haize, & Jack Swigert to the moon. An explosion occurred, endangering the Apollo 13 Lunar Landing mission & astronauts Jim Lovell, Fred Haize, & Jack Swigert, the Apollo 13 space exploration mission became a race for survival. As NASA experts & contractors struggled to come up with solutions, the Apollo 13 astronauts; Jim Lovell, Fred Haize, & Jack Swigert; struggled to survive. The successful failure of space exploration.
Constellations Pictures Gallery
Constellations information. Discover more about each of the 88 modern constellations. Find the names, information, and pictures of the 88 constellations.
Constellations information. Discover more about each of the 88 modern constellations. Find the names, information, and pictures of the 88 constellations.
6 Things About Telescopes
So, you want to know how to buy a telescope. Being a knowledgeable consumer is key Before you go shopping, learn as much as you can about telescopes. We will try to help you get started here, with the six things you need to know about how to buy a telescope.
So, you want to know how to buy a telescope. Being a knowledgeable consumer is key Before you go shopping, learn as much as you can about telescopes. We will try to help you get started here, with the six things you need to know about how to buy a telescope.
What Is The Solar System?
Solar means dealing with the sun, Sol. Our sun is just a star, the closest one to Planet Earth. The Solar System is everything that centers around the sun. That includes 8 planets as well as some smaller objects such as asteroids, comets and meteoroids. Previously, we had considered one of those smaller objects to be a ninth planet, but last year, the International Astronomical Union decided that Pluto is a Dwarf Planet.
Solar means dealing with the sun, Sol. Our sun is just a star, the closest one to Planet Earth. The Solar System is everything that centers around the sun. That includes 8 planets as well as some smaller objects such as asteroids, comets and meteoroids. Previously, we had considered one of those smaller objects to be a ninth planet, but last year, the International Astronomical Union decided that Pluto is a Dwarf Planet.
Top Ten Largest Stars
Stars are immense balls of glowing plasma. Our Sun provides all the light and heat necessary for life to exist on Earth. And while the Sun is large in comparison to Earth, it is absolutely dwarfed by some of the stars that exist outside of our solar system. Following is a list of the 10 largest stars known in our Universe.
Stars are immense balls of glowing plasma. Our Sun provides all the light and heat necessary for life to exist on Earth. And while the Sun is large in comparison to Earth, it is absolutely dwarfed by some of the stars that exist outside of our solar system. Following is a list of the 10 largest stars known in our Universe.
Astronomy 101 - Final Exam
Free Basic Astronomy course. Astronomy 101 - Pass a simple 20 question quiz to receive your certificate.
Free Basic Astronomy course. Astronomy 101 - Pass a simple 20 question quiz to receive your certificate.
Facts About Jupiter
Jupiter, the kind of the planets, is the largest and heaviest of the planets in our solar system. Perhaps best known for the giant red storm on the surface, Jupiter has many features that may surprise people. So check out our list of the most interesting facts about Jupiter.
Jupiter, the kind of the planets, is the largest and heaviest of the planets in our solar system. Perhaps best known for the giant red storm on the surface, Jupiter has many features that may surprise people. So check out our list of the most interesting facts about Jupiter.
Earth Pictures - Full Earth
View of the Earth as seen by the Apollo 17 crew traveling toward the Moon. This translunar coast photograph extends from the Mediterranean Sea area to the Antarctica South polar ice cap. This is the first time the Apollo trajectory made it possible to photograph the South polar ice cap. Note the heavy cloud cover in the Southern Hemisphere. Almost the entire coastline of Africa is clearly visible.
View of the Earth as seen by the Apollo 17 crew traveling toward the Moon. This translunar coast photograph extends from the Mediterranean Sea area to the Antarctica South polar ice cap. This is the first time the Apollo trajectory made it possible to photograph the South polar ice cap. Note the heavy cloud cover in the Southern Hemisphere. Almost the entire coastline of Africa is clearly visible.
Interesting Facts About Neptune
Neptune is one of the most interesting objects in our solar system. It shares commonalities with its
Neptune is one of the most interesting objects in our solar system. It shares commonalities with its
The Human Body In A Vacuum
In the 1981 movie "Outland", starring Sean Connery, there is a scene where a construction worker in space
In the 1981 movie "Outland", starring Sean Connery, there is a scene where a construction worker in space
Neil Armstrong Quotes
Neil Armstrong is unequivocally an American hero. His bravery and skill earned him the honor of the first human to ever set foot on the Moon. As a result Neil Armstrong has been looked to for insight into the human condition as well as commentary on the state of technology and space exploration. Here we look at the top ten Neil Armstrong quotes, to see how he has influenced our nation and world.
Neil Armstrong is unequivocally an American hero. His bravery and skill earned him the honor of the first human to ever set foot on the Moon. As a result Neil Armstrong has been looked to for insight into the human condition as well as commentary on the state of technology and space exploration. Here we look at the top ten Neil Armstrong quotes, to see how he has influenced our nation and world.
Black Holes
A favorite phenomenon of science fiction writers, black holes are real objects that play an important role in our Universe. There are different types of black holes, arising from different processes. But they all have one thing in common, they are incredibly dense regions of space that have gravitational fields so strong that not even light can escape their grasp.
A favorite phenomenon of science fiction writers, black holes are real objects that play an important role in our Universe. There are different types of black holes, arising from different processes. But they all have one thing in common, they are incredibly dense regions of space that have gravitational fields so strong that not even light can escape their grasp.
Pythagoras of Samos Biography
Pythagoras, the son of Mnesarchus and Pythais, was born on the island of Samos, off the coast of Asia Minor (what is now mostly Turkey), about 569 BC. Besides his contributions to mathematics, Pythagoras was essential to the early field of astronomy. As Plato later would believe, Pythagoras felt the sphere was the perfect shape. This may have lead to his assertion that the Earth was a sphere. He realized the orbit of the Moon was inclined to the equator of the Earth.
Pythagoras, the son of Mnesarchus and Pythais, was born on the island of Samos, off the coast of Asia Minor (what is now mostly Turkey), about 569 BC. Besides his contributions to mathematics, Pythagoras was essential to the early field of astronomy. As Plato later would believe, Pythagoras felt the sphere was the perfect shape. This may have lead to his assertion that the Earth was a sphere. He realized the orbit of the Moon was inclined to the equator of the Earth.
Pluto Pictures Gallery
Discover Pluto Pictures and images in this Pluto Pictures Gallery. The former ninth planet from the sun, these dwarf planet Pluto pictures are amazing.
Discover Pluto Pictures and images in this Pluto Pictures Gallery. The former ninth planet from the sun, these dwarf planet Pluto pictures are amazing.
Alien Visits
For decades man has wondered if beings have another world have walked among us. Is it possible? Or is it simply science fiction? What about the evidence out there, is any of it credible. These are questions that we will explore.
For decades man has wondered if beings have another world have walked among us. Is it possible? Or is it simply science fiction? What about the evidence out there, is any of it credible. These are questions that we will explore.
Is Sex in Space Possible?
It may sound taboo, but one of the most popular questions fielded by astronauts posits the idea of sex in space. Many wonder if it is even possible. Some argue that it must have happened by now, what with all the coed crews journeying to the International Space Station. So is sex in space possible? And, more interestingly, has sex in space ever happened?
It may sound taboo, but one of the most popular questions fielded by astronauts posits the idea of sex in space. Many wonder if it is even possible. Some argue that it must have happened by now, what with all the coed crews journeying to the International Space Station. So is sex in space possible? And, more interestingly, has sex in space ever happened?
Facts About Saturn
Saturn is best known for its beautiful and distinctive rings. But this is just one of the amazing facts about the second largest planet in our solar system. So, join me as we run down the most interesting facts about Saturn.
Saturn is best known for its beautiful and distinctive rings. But this is just one of the amazing facts about the second largest planet in our solar system. So, join me as we run down the most interesting facts about Saturn.
Space Exploration
Man has always been fascinated by the heavens. Even before man knew what was out there he has thought about walking among the stars. Science fiction has revolutionized the way that we think about space exploration. And now that science is beginning to make giant leaps forward, it may not be long before science fiction becomes a reality.
Man has always been fascinated by the heavens. Even before man knew what was out there he has thought about walking among the stars. Science fiction has revolutionized the way that we think about space exploration. And now that science is beginning to make giant leaps forward, it may not be long before science fiction becomes a reality.
New Asteroid Threat to Earth
Although scientists have basically cleared us from any danger from asteroid 2002 NT7 , which originally
Although scientists have basically cleared us from any danger from asteroid 2002 NT7 , which originally
Time Travel into the Past
There have been times when I wish that I could revisit the past. Perhaps to undo a mistake, or to visit a hero of history. Time travel is an often used plot device in many science fiction works, but is there any science behind it? Is it possible to time travel into the past?
There have been times when I wish that I could revisit the past. Perhaps to undo a mistake, or to visit a hero of history. Time travel is an often used plot device in many science fiction works, but is there any science behind it? Is it possible to time travel into the past?
Space Disasters and Tragedies
Space is a dangerous place. In all of human endeavor, there is danger. It is not possible to completely avoid risk. Even if you choose to hide in your home, some danger still exists. To live is to risk, but there are those, particularly those who work for the betterment of mankind, who risk more than others. From the fire and police officials who entered two buildings struck by terrorists in New York to the seven members of the space shuttle Columbia crew, exploring the final frontier.
Space is a dangerous place. In all of human endeavor, there is danger. It is not possible to completely avoid risk. Even if you choose to hide in your home, some danger still exists. To live is to risk, but there are those, particularly those who work for the betterment of mankind, who risk more than others. From the fire and police officials who entered two buildings struck by terrorists in New York to the seven members of the space shuttle Columbia crew, exploring the final frontier.
New NASA Vision
It's been nearly 40 years since man last set foot on the Moon. Will man return? Will we venture onto more distant worlds? Well NASA has been commissioned with a new vision, and it is one that will take man to worlds beyond our own.
It's been nearly 40 years since man last set foot on the Moon. Will man return? Will we venture onto more distant worlds? Well NASA has been commissioned with a new vision, and it is one that will take man to worlds beyond our own.
Galaxy Planet Population
There are a vast number of stars in the Milky Way galaxy, and recent data suggests that many of them have planets orbiting around them. But how many of these would we expect to be fit for life, and how many of these will actually contain life? The answers are not so simple.
There are a vast number of stars in the Milky Way galaxy, and recent data suggests that many of them have planets orbiting around them. But how many of these would we expect to be fit for life, and how many of these will actually contain life? The answers are not so simple.
Sirius
Sirius, also known as the Dog Star, is the brightest star in the sky. It is also the sixth closest star to Earth. Its name comes from the Greek word for scorching. At 8.6 light years, it is also one of the closest stars to our own sun. In 1844, F.W. Bessel used analysis of its motion to determine that it had a companion. This companion was confirmed by observations in 1862 and is now known to be a white dwarf.
Sirius, also known as the Dog Star, is the brightest star in the sky. It is also the sixth closest star to Earth. Its name comes from the Greek word for scorching. At 8.6 light years, it is also one of the closest stars to our own sun. In 1844, F.W. Bessel used analysis of its motion to determine that it had a companion. This companion was confirmed by observations in 1862 and is now known to be a white dwarf.
Halley's Comet
Using Newton's new Laws of motion, the astronomer, Edmond Halley, made a prediction in 1705. He stated that a comet which had appeared in 1531, 1607 and 1682 would reappear in 1758. Although he was proven to be correct, Halley did not live to see it. However, the comet was later named in his honor. During the 20th century, Halley's Comet appeared in 1910 and 1986. During that most recent visit, five spacecraft from the USSR, Japan, and the European Community journeyed to Comet Halley.
Using Newton's new Laws of motion, the astronomer, Edmond Halley, made a prediction in 1705. He stated that a comet which had appeared in 1531, 1607 and 1682 would reappear in 1758. Although he was proven to be correct, Halley did not live to see it. However, the comet was later named in his honor. During the 20th century, Halley's Comet appeared in 1910 and 1986. During that most recent visit, five spacecraft from the USSR, Japan, and the European Community journeyed to Comet Halley.
satellite
satellite - from an ever growing glossary of space and astronomy definitions. Find the definitions for satellite and all your space and astronomy related words in this online dictionary - glossary.
satellite - from an ever growing glossary of space and astronomy definitions. Find the definitions for satellite and all your space and astronomy related words in this online dictionary - glossary.
Frequently Asked Questions ...
Browse these Frequently Asked Questions About Space & Astronomy. Learn the answers to Astronomy Questions & Space Questions This feature of our Basics Series; What You Need To Know About Space provides answers to astronomy questions and space questions. Discover the answers to some frequently asked questions about space.
Browse these Frequently Asked Questions About Space & Astronomy. Learn the answers to Astronomy Questions & Space Questions This feature of our Basics Series; What You Need To Know About Space provides answers to astronomy questions and space questions. Discover the answers to some frequently asked questions about space.
Telescope Astronomy Basics
Discover the basics of telescope astronomy with this guide. Telescopes come in three basic designs; Refractor, Reflector, and Catadioptric. Telescope astronomy is often the goal of many amateur astronomers. Learn this information before purchasing an instrument for telescope astronomy.
Discover the basics of telescope astronomy with this guide. Telescopes come in three basic designs; Refractor, Reflector, and Catadioptric. Telescope astronomy is often the goal of many amateur astronomers. Learn this information before purchasing an instrument for telescope astronomy.
Should Pluto Be a Planet?
In 2006 the International Astronomical Union stripped Pluto of its planet-hood, demoting it to dwarf planet status. But the debate has raged on ever since. So should Pluto be a planet, and in the end does it even matter?
In 2006 the International Astronomical Union stripped Pluto of its planet-hood, demoting it to dwarf planet status. But the debate has raged on ever since. So should Pluto be a planet, and in the end does it even matter?
Edwin Hubble
Edwin Hubble was born November 29, 1889 in Marshfield Missouri. During his academic career, Hubble made the amazing discovery that the universe extended well beyond the Milky Way Galaxy, and that there were many more galaxies that lay in the distance. Hubble also later played an important role in determining that the universe is expanding.
Edwin Hubble was born November 29, 1889 in Marshfield Missouri. During his academic career, Hubble made the amazing discovery that the universe extended well beyond the Milky Way Galaxy, and that there were many more galaxies that lay in the distance. Hubble also later played an important role in determining that the universe is expanding.
Meteoroids
Shooting stars or meteors are bits of material falling through Earth's atmosphere; they are heated to incandescence by the friction of the air. The bright trails as they are coming through the Earth's atmosphere are termed meteors, and these chunks as they are hurtling through space are called meteoroids. Large pieces that do not vaporize completely and reach the surface of the Earth are termed meteorites.
Shooting stars or meteors are bits of material falling through Earth's atmosphere; they are heated to incandescence by the friction of the air. The bright trails as they are coming through the Earth's atmosphere are termed meteors, and these chunks as they are hurtling through space are called meteoroids. Large pieces that do not vaporize completely and reach the surface of the Earth are termed meteorites.
revolution
revolution - from an ever growing glossary of space and astronomy definitions. Find the definitions for revolution and all your space and astronomy related words in this online dictionary - glossary.
revolution - from an ever growing glossary of space and astronomy definitions. Find the definitions for revolution and all your space and astronomy related words in this online dictionary - glossary.
Astronomy Books for Adults
Check out these top astronomy books for adults. Find astronomy books to complete your knowledge and library. From the basics through telescopes, these astronomy books will give you the insight you need.
Check out these top astronomy books for adults. Find astronomy books to complete your knowledge and library. From the basics through telescopes, these astronomy books will give you the insight you need.
Space Firsts - Basics
Space Firsts - Space Basics - Firsts In Space exploration - Space Firsts - Basics Series; What You Need To Know About Space. Discover who did what and when in these space firsts. From the first Earthling in space to the first man on the moon.
Space Firsts - Space Basics - Firsts In Space exploration - Space Firsts - Basics Series; What You Need To Know About Space. Discover who did what and when in these space firsts. From the first Earthling in space to the first man on the moon.
matter-antimatter power
Aboard the famed Starship Enterprise from the television series Star Trek the propulsion systems are energized by a matter-antimatter power plant. Is such a thing even possible? Could we ever build such a device and use it to power starships?
Aboard the famed Starship Enterprise from the television series Star Trek the propulsion systems are energized by a matter-antimatter power plant. Is such a thing even possible? Could we ever build such a device and use it to power starships?
Neil Armstrong Quotations
Born on August 5, 1930 on his grandparents’ farm in Auglaize County, Ohio, Neil Armstrong became the first man on the moon on July 20, 1969 during the Apollo 11 mission. These quotations are by and about Neil Armstrong, first man on the moon. Find quotes said by Armstrong as well as quotations about Neil.
Born on August 5, 1930 on his grandparents’ farm in Auglaize County, Ohio, Neil Armstrong became the first man on the moon on July 20, 1969 during the Apollo 11 mission. These quotations are by and about Neil Armstrong, first man on the moon. Find quotes said by Armstrong as well as quotations about Neil.
Sun Info
The Sun is the central body in our solar system. It provides the energy needed for life to exist on Earth as well as the gravitational force to keep the planets in orbit. Here are the basic properties and information about the closest star to Earth.
The Sun is the central body in our solar system. It provides the energy needed for life to exist on Earth as well as the gravitational force to keep the planets in orbit. Here are the basic properties and information about the closest star to Earth.
Dr. Mae C. Jemison
Chemical engineer, scientist, physician, teacher and astronaut, Dr. Mae Jemison has a wide range of experience
Chemical engineer, scientist, physician, teacher and astronaut, Dr. Mae Jemison has a wide range of experience
What Is Astronomy?
Astronomy, derived from the Greek words for star law, is the scientific study of all objects beyond our world, and the process by which we seek to understand the physical laws and origins of our universe.
Astronomy, derived from the Greek words for star law, is the scientific study of all objects beyond our world, and the process by which we seek to understand the physical laws and origins of our universe.
Apollo 11 Mission
Apollo 11 Mission - First Humans on the Moon. The Space Race, and competition to land on the moon was a product of the Cold War. Not only was it an effort to prove technological superiority, but there was also a real fear on both sides that the other might place weapons of mass destruction in space.
Apollo 11 Mission - First Humans on the Moon. The Space Race, and competition to land on the moon was a product of the Cold War. Not only was it an effort to prove technological superiority, but there was also a real fear on both sides that the other might place weapons of mass destruction in space.
Solar System
A solar system consists of a star & all the objects orbiting it as well as all the material in that system. Our Solar System includes the Sun together with the eight planets & their moons as well as all other celestial bodies that orbit the sun. Besides the sun, 8 planets & their moons, our Solar System contains billions of other objects and extends far beyond the outermost planets. There are several hundred thousand asteroids revolving around the Sun. Most have orbits between Mars and Jupiter.
A solar system consists of a star & all the objects orbiting it as well as all the material in that system. Our Solar System includes the Sun together with the eight planets & their moons as well as all other celestial bodies that orbit the sun. Besides the sun, 8 planets & their moons, our Solar System contains billions of other objects and extends far beyond the outermost planets. There are several hundred thousand asteroids revolving around the Sun. Most have orbits between Mars and Jupiter.
Free Astronomy and Space Posters - Printable Astronomy and Space Posters
Print these free astronomy and space posters from your home computer to create your own astronomy and space posters.
Print these free astronomy and space posters from your home computer to create your own astronomy and space posters.
Hubble Space Telescope
Hubble Space Telescope's Name: The Hubble Space Telescope was the world's first space-based optical telescope.
Hubble Space Telescope's Name: The Hubble Space Telescope was the world's first space-based optical telescope.
Valentina Tereshkova Biography
The first woman in space was Valentina Tereshkova, cosmonaut. The USSR sent a female cosmonaut, Valentina Tereshkova into space many years before NASA sent astronaut, Sally Ride. This is a biography of Valentina Tereshkova.
The first woman in space was Valentina Tereshkova, cosmonaut. The USSR sent a female cosmonaut, Valentina Tereshkova into space many years before NASA sent astronaut, Sally Ride. This is a biography of Valentina Tereshkova.
Does the Moon Rotate?
One of the questions that is often wrongly answered about astronomy pertains to the rotation of the Moon. Specifically, does the moon rotate? The answer is yes, but very slowly. And not only that, but it rotates in a very precise manor as the Earth and Moon interact and cause our natural nightlight to always show us the same face.
One of the questions that is often wrongly answered about astronomy pertains to the rotation of the Moon. Specifically, does the moon rotate? The answer is yes, but very slowly. And not only that, but it rotates in a very precise manor as the Earth and Moon interact and cause our natural nightlight to always show us the same face.
Supernovae
Supernovae (plural form of supernova) are the most violent events in the Universe. The energy emitted during an event can out shine an entire galaxy of billions of stars. The result of a massive star dying, the are fascinating to study, and brilliant to behold.
Supernovae (plural form of supernova) are the most violent events in the Universe. The energy emitted during an event can out shine an entire galaxy of billions of stars. The result of a massive star dying, the are fascinating to study, and brilliant to behold.
Red Supergiant Stars
The largest stars in the Universe are red supergiants. The creation and evolution of these behemoths is an active area of research among scientists. It is believed that high mass stars eventually evolve into supergiants once they leave the main sequence and that, eventually, they will brilliantly explode in a massive supernova.
The largest stars in the Universe are red supergiants. The creation and evolution of these behemoths is an active area of research among scientists. It is believed that high mass stars eventually evolve into supergiants once they leave the main sequence and that, eventually, they will brilliantly explode in a massive supernova.
Pluto Picture - Pluto in True Color
Pluto is mostly brown. This picture captures the true colors of Pluto as well as the highest surface resolution so far recovered. No spacecraft has yet visited this most distant planet in our Solar System. The above map was created by tracking brightness changes from Earth of Pluto during times when it was being partially eclipsed by its moon Charon. The map therefore shows the hemisphere of Pluto that faces Charon.
Pluto is mostly brown. This picture captures the true colors of Pluto as well as the highest surface resolution so far recovered. No spacecraft has yet visited this most distant planet in our Solar System. The above map was created by tracking brightness changes from Earth of Pluto during times when it was being partially eclipsed by its moon Charon. The map therefore shows the hemisphere of Pluto that faces Charon.
Meteorite Hunters
When a meteorite is found, the ANSMET (Antarctic Search for Meteorites) team records its location, size, color, amount of fusion crust, probable type, and anything else that might be important. Some of their tools are similar to those used by the Apollo astronauts to collect samples, and some are the latest high-tech (like Global Positioning Satellite navigation). The team takes great care not to contaminate the meteorites.
When a meteorite is found, the ANSMET (Antarctic Search for Meteorites) team records its location, size, color, amount of fusion crust, probable type, and anything else that might be important. Some of their tools are similar to those used by the Apollo astronauts to collect samples, and some are the latest high-tech (like Global Positioning Satellite navigation). The team takes great care not to contaminate the meteorites.
Mars Information
Mars Information. Astronomy Guide to Space exploration close to home. Information on planets in our solar system. Information on Mars, the red planet.
Mars Information. Astronomy Guide to Space exploration close to home. Information on planets in our solar system. Information on Mars, the red planet.
What are Asteroids
It seems like a monthly occurrence that the media is touting some new threat to the very survival of mankind. Whether it is a new plague, a solar flare or an approaching asteroid, there is always cause for concern. But should we really be worried about asteroids? What are these objects and where do they come from?
It seems like a monthly occurrence that the media is touting some new threat to the very survival of mankind. Whether it is a new plague, a solar flare or an approaching asteroid, there is always cause for concern. But should we really be worried about asteroids? What are these objects and where do they come from?
Killer Asteroids
The threat of a large asteroid or comet colliding with Earth is very real. How will we stop the destruction of Earth? Is there a plan to combat the, potentially, greatest threat to life on Earth?
The threat of a large asteroid or comet colliding with Earth is very real. How will we stop the destruction of Earth? Is there a plan to combat the, potentially, greatest threat to life on Earth?
Proxima Centauri Information
The closest star to our our own solar system will not always be closest, but it will be a long time before that happens. Proxima Centauri is the third star in the Alpha Centauri star system Also known as Alpha Centauri C, it circles its two companions at about 930 billion miles. This orbit takes millions of years, but will eventually carry Proxima far enough that its companions,collectively known as Rigel Kentaurus, will be closer. It is a red dwarf star, much smaller and cooler than the Sun.
The closest star to our our own solar system will not always be closest, but it will be a long time before that happens. Proxima Centauri is the third star in the Alpha Centauri star system Also known as Alpha Centauri C, it circles its two companions at about 930 billion miles. This orbit takes millions of years, but will eventually carry Proxima far enough that its companions,collectively known as Rigel Kentaurus, will be closer. It is a red dwarf star, much smaller and cooler than the Sun.
Telescopes for Kids
Everyone has to start somewhere. Star your kids off right with quality telescopes at good prices. Check here for some great reflectors and refractors. Less expensive telescopes.
Everyone has to start somewhere. Star your kids off right with quality telescopes at good prices. Check here for some great reflectors and refractors. Less expensive telescopes.
Why is Getting to Mars so Difficult?
In the late 1960's the United States proved to the world that it was possible to land humans on the Moon. Now, more than forty years later, the technology that took us to our nearest neighbor is quite antiquated. So with all our new advanced technology and innovation, why have we not ventured out beyond our Moon? How difficult is it really to send humans to Mars?
In the late 1960's the United States proved to the world that it was possible to land humans on the Moon. Now, more than forty years later, the technology that took us to our nearest neighbor is quite antiquated. So with all our new advanced technology and innovation, why have we not ventured out beyond our Moon? How difficult is it really to send humans to Mars?
Did Galileo Invent
Did Galileo Invent the Telescope? Frequently Asked Questions About Space. Did Galileo Invent the Telescope?
Did Galileo Invent the Telescope? Frequently Asked Questions About Space. Did Galileo Invent the Telescope?
Telescope Purchase
Telescope Purchase - So, you've been stargazing for a while with your naked eye or binoculars and you want to move up to a telescope. Buying a telescope is one of the biggest decisions for an amateur astronomer. If you are not really sure how to buy a telescope, it can be a daunting task. Follow these simple steps and we'll tell you how to buy a telescope.
Telescope Purchase - So, you've been stargazing for a while with your naked eye or binoculars and you want to move up to a telescope. Buying a telescope is one of the biggest decisions for an amateur astronomer. If you are not really sure how to buy a telescope, it can be a daunting task. Follow these simple steps and we'll tell you how to buy a telescope.
Astronomy 101 - History
Early History of Astronomy. The study of our Universe is not new, the history of astronomy shows it to be the oldest science. People have been looking up, trying to explain the universe for as long as there have been people. Here, in lesson 1, we look at the early history of astronomy. We’ll look at ancient astronomers and their contributions to the history of astronomy.
Early History of Astronomy. The study of our Universe is not new, the history of astronomy shows it to be the oldest science. People have been looking up, trying to explain the universe for as long as there have been people. Here, in lesson 1, we look at the early history of astronomy. We’ll look at ancient astronomers and their contributions to the history of astronomy.
Earth Pictures - Earth Globe
Earth Globe 11/20/1998
Earth Globe 11/20/1998
If The Sun Was Gone
What Would Happen If The Sun Was Gone? Frequently Asked Questions About Space - Basics Series; What You Need To Know About Space. Discover the answers to some frequently asked questions about space.
What Would Happen If The Sun Was Gone? Frequently Asked Questions About Space - Basics Series; What You Need To Know About Space. Discover the answers to some frequently asked questions about space.
Christa McAuliffe - Space S...
Sharon Christa Corrigan was born September 2, 1948 to Edward and Grace Corrigan, the first of five children. On January 28, 1986, the world lost one of its greatest resources, Christa McAuliffe.
Sharon Christa Corrigan was born September 2, 1948 to Edward and Grace Corrigan, the first of five children. On January 28, 1986, the world lost one of its greatest resources, Christa McAuliffe.
Benjamin Banneker Biography
Benjamin Banneker was an African-American astronomer, clockmaker, & publisher who was instrumental in surveying the District of Columbia. Banneker taught himself astronomy & advanced mathematics. He turned his attention to both subjects. His study of astronomy enabled him to make the calculations to predict solar & lunar eclipses, even correctly contradicting experts of the day, & to compile an ephemeris for his Benjamin Banneker's Almanac. He became known as the Sable Astronomer.
Benjamin Banneker was an African-American astronomer, clockmaker, & publisher who was instrumental in surveying the District of Columbia. Banneker taught himself astronomy & advanced mathematics. He turned his attention to both subjects. His study of astronomy enabled him to make the calculations to predict solar & lunar eclipses, even correctly contradicting experts of the day, & to compile an ephemeris for his Benjamin Banneker's Almanac. He became known as the Sable Astronomer.
planet
planet - from an ever growing glossary of space and astronomy definitions. Find the definitions for planet and all your space and astronomy related words in this online dictionary - glossary.
planet - from an ever growing glossary of space and astronomy definitions. Find the definitions for planet and all your space and astronomy related words in this online dictionary - glossary.
The Evolution of the SpaceSuit
Ever since Alan Shepard's history making flight in 1961, NASA astronauts have relied on spacesuits to
Ever since Alan Shepard's history making flight in 1961, NASA astronauts have relied on spacesuits to
Solar System Tour
Astronomy Solar System Tour, an Astronomy Guide to Space exploration close to home. Discover information on planets in our solar system. Find pictures of objects in our solar system. Learn more about our galactic neighborhood, our solar system.
Astronomy Solar System Tour, an Astronomy Guide to Space exploration close to home. Discover information on planets in our solar system. Find pictures of objects in our solar system. Learn more about our galactic neighborhood, our solar system.
How Was the Moon Made?
Even the earliest humans were aware of the Moon. Besides the Sun it is the most dominant object in the sky. But how was it made? Where did it come from? These questions puzzled people for millennia. And while not an absolute, we now believe that we know how the Moon was made.
Even the earliest humans were aware of the Moon. Besides the Sun it is the most dominant object in the sky. But how was it made? Where did it come from? These questions puzzled people for millennia. And while not an absolute, we now believe that we know how the Moon was made.
Jupiter Pictures Gallery
Jupiter Pictures; Jupiter, the fifth planet from the sun, is also the largest in our solar system. Its average distance is approximately 480 million miles, which is about five times the distance from Earth to the Sun. Unlike the terrestrial planets, Jupiter is a large ball of gas, tightly condensed. Enjoy these Jupiter Pictures.
Jupiter Pictures; Jupiter, the fifth planet from the sun, is also the largest in our solar system. Its average distance is approximately 480 million miles, which is about five times the distance from Earth to the Sun. Unlike the terrestrial planets, Jupiter is a large ball of gas, tightly condensed. Enjoy these Jupiter Pictures.
Gravitational Pull
Definition: Gravitational Pull; The attraction that one object has for another object due to the invisible force of gravity. The mass of an object affects its gravitational pull. The gravitational pull of the Sun keeps the planets in orbit around it.
Definition: Gravitational Pull; The attraction that one object has for another object due to the invisible force of gravity. The mass of an object affects its gravitational pull. The gravitational pull of the Sun keeps the planets in orbit around it.
dwarf planets
In 2006 there was quite a controversy when the International Astronomical Union decided that Pluto ,
In 2006 there was quite a controversy when the International Astronomical Union decided that Pluto ,
Biography of Buzz Aldrin
On July 20, 1969, Buzz Aldrin became the second man to ever set foot on the Moon. The successful Apollo 11 Moon mission was a defining moment for America, and for mankind in general.
On July 20, 1969, Buzz Aldrin became the second man to ever set foot on the Moon. The successful Apollo 11 Moon mission was a defining moment for America, and for mankind in general.
Ptolemy Biography
Ptolemy (aka Claudius Ptolemaeus, Ptolomaeus, Klaudios Ptolemaios, Ptolemeus) lived in Alexandria, Egypt. We know very little of Ptolemy's life, including his birth and death dates. He was an astronomer, mathematician and geographer. Ptolemy created the Ptolemaic System - Earth Centered Universe.
Ptolemy (aka Claudius Ptolemaeus, Ptolomaeus, Klaudios Ptolemaios, Ptolemeus) lived in Alexandria, Egypt. We know very little of Ptolemy's life, including his birth and death dates. He was an astronomer, mathematician and geographer. Ptolemy created the Ptolemaic System - Earth Centered Universe.
life in our galaxy
The search for life outside our tiny blue rock has consumed the imagination of man for decades. But now, with increasingly advanced technology we may finally be on the verge of discovering where else life may exist in our galaxy. The more we search, however, the more we realize that life may be rather precious after all.
The search for life outside our tiny blue rock has consumed the imagination of man for decades. But now, with increasingly advanced technology we may finally be on the verge of discovering where else life may exist in our galaxy. The more we search, however, the more we realize that life may be rather precious after all.
Stars - Quiz on Stars - Try Your Luck Out on The Simple Quiz About Stars. Learn how much you know about stars.
Stars - Quiz on Stars Try Your Hand at This Simple Quiz About Stars Discover What You Know About Star
Stars - Quiz on Stars Try Your Hand at This Simple Quiz About Stars Discover What You Know About Star
Sally Ride Biography
Biography of Doctor Sally Ride, NASA astronaut and the first American woman in space. Tennis’s loss was a boon to the rest of the world as Sally Ride quit her dream of playing professional tennis and became a NASA astronaut. Sally Ride went on to become the first American woman in space.
Biography of Doctor Sally Ride, NASA astronaut and the first American woman in space. Tennis’s loss was a boon to the rest of the world as Sally Ride quit her dream of playing professional tennis and became a NASA astronaut. Sally Ride went on to become the first American woman in space.
Main Sequence Stars
Not all stars are the same; some are smaller, some are larger, some are red, some are blue. While these stars may be different in a variety of ways, they all spend most of their lives on what is known as the main sequence. Here, stars fuse hydrogen into helium to sustain themselves, but when that hydrogen runs out, these stars can lead vastly different lives.
Not all stars are the same; some are smaller, some are larger, some are red, some are blue. While these stars may be different in a variety of ways, they all spend most of their lives on what is known as the main sequence. Here, stars fuse hydrogen into helium to sustain themselves, but when that hydrogen runs out, these stars can lead vastly different lives.
Secret Space Shuttle
The speculation of several television series, the concept of a secret military shuttle program is intriguing for sure. But is there any truth to it?
The speculation of several television series, the concept of a secret military shuttle program is intriguing for sure. But is there any truth to it?
Microwave Radiation
: Microwaves are electromagnetic radiation (light) that has a frequency between 0.3 Gigahertz (GHz) and
: Microwaves are electromagnetic radiation (light) that has a frequency between 0.3 Gigahertz (GHz) and
The Doppler Effect
The doppler effect is a phenomenon by which a source's radiation appears to be of higher (blueshifted) or lower (redshifted) energy than it really is. This is caused by the object's motion relative to the observer, and is an important tool in astronomy as we try to understand the Universe.
The doppler effect is a phenomenon by which a source's radiation appears to be of higher (blueshifted) or lower (redshifted) energy than it really is. This is caused by the object's motion relative to the observer, and is an important tool in astronomy as we try to understand the Universe.
Constellations Pictures - Andromeda - Picture of the Constellation Andromeda
Andromeda, daughter of Cepheus and Cassiopeia. - Genitive: Andromedae Abbreviations: And, Andr Right Ascension, (h): 1 Declination, (deg): 40N
Andromeda, daughter of Cepheus and Cassiopeia. - Genitive: Andromedae Abbreviations: And, Andr Right Ascension, (h): 1 Declination, (deg): 40N
Star
star - from an ever growing glossary of space and astronomy definitions. Find the definitions for star and all your space and astronomy related words in this online dictionary - glossary.
star - from an ever growing glossary of space and astronomy definitions. Find the definitions for star and all your space and astronomy related words in this online dictionary - glossary.
Nemesis
Several years ago a theory was proposed that sounded more science fiction than science. What if our Sun was actually part of a binary system. Only this other star is very small and barely luminous so we can't readily detect it. Eventually this star would enter the inner part of our solar system, potentially destroying all life on Earth as we know it. Far fetched? Well what was once the stuff of fiction may turn out to be reality.
Several years ago a theory was proposed that sounded more science fiction than science. What if our Sun was actually part of a binary system. Only this other star is very small and barely luminous so we can't readily detect it. Eventually this star would enter the inner part of our solar system, potentially destroying all life on Earth as we know it. Far fetched? Well what was once the stuff of fiction may turn out to be reality.
Jupiter - Astronomy Pictures, History and Facts
Jupiter MEAN RADIUS: 69911 km MASS: 317.8 (Earth=1) DENSITY: 1.31 (g/cm^3) GRAVITY: 2.34 (Earth=1) ORBIT
Jupiter MEAN RADIUS: 69911 km MASS: 317.8 (Earth=1) DENSITY: 1.31 (g/cm^3) GRAVITY: 2.34 (Earth=1) ORBIT
Tsunami Damage in Indonesia - Pictures of Tsunami Damage in Indonesia - Earthquake Spawns Tsunami
On December 26, 2004, a tsunami swept across the Indian ocean, spawned by a magnitude 9.0 earthquake off the coast of Sumatra. Indonesia suffered the many tsunami casualties, part of the total death toll of over 155,000. Here we see before and after images of many of the areas of Indonesia hardest hit by the tsunami. Click each image for a larger view.
On December 26, 2004, a tsunami swept across the Indian ocean, spawned by a magnitude 9.0 earthquake off the coast of Sumatra. Indonesia suffered the many tsunami casualties, part of the total death toll of over 155,000. Here we see before and after images of many of the areas of Indonesia hardest hit by the tsunami. Click each image for a larger view.
Pronunciation of Uranus
The planet Uranus is one of the most beautiful objects in the night sky, especially as viewed through a telescope. Discussion of this object is often met with snickers and laughter because of how it is pronounced. But do people pronounce it correctly, or should it be said a different way?
The planet Uranus is one of the most beautiful objects in the night sky, especially as viewed through a telescope. Discussion of this object is often met with snickers and laughter because of how it is pronounced. But do people pronounce it correctly, or should it be said a different way?
Laws of Planetary Motion
Johannes Kepler (1571-1630) was a German astronomer and mathematician. After Tycho Brahe (1546-1601) settled in Prague in 1599 (then the site of the court of the German emperor Rudolf) and became court astronomer, he hired Johannes Kepler to carry out his calculations. Kepler had studied astronomy long before he met Tycho; he favored the Copernican world-view and corresponded with Galileo.
Johannes Kepler (1571-1630) was a German astronomer and mathematician. After Tycho Brahe (1546-1601) settled in Prague in 1599 (then the site of the court of the German emperor Rudolf) and became court astronomer, he hired Johannes Kepler to carry out his calculations. Kepler had studied astronomy long before he met Tycho; he favored the Copernican world-view and corresponded with Galileo.
ellipse
ellipse - from an ever growing glossary of space and astronomy definitions. Find the definitions for ellipse and all your space and astronomy related words in this online dictionary - glossary.
ellipse - from an ever growing glossary of space and astronomy definitions. Find the definitions for ellipse and all your space and astronomy related words in this online dictionary - glossary.
Dark Side of the Moon
How many time have you used that phrase, dark side of the moon? At times, some people have been of the belief that one side of the moon was always dark, hence the phrase dark side of the moon. Is ther really a dark side of the moon? Read this article to learn the truth about the dark side of the moon.
How many time have you used that phrase, dark side of the moon? At times, some people have been of the belief that one side of the moon was always dark, hence the phrase dark side of the moon. Is ther really a dark side of the moon? Read this article to learn the truth about the dark side of the moon.
Sound in Space
Is there sound in space? It's a common question, and the answer is often misrepresented in film and television (though producers are getting better at dealing with this issue). Recently, the question has become even more cloudy with the release of CDs from NASA that contain tracks of the different sounds in space. How can this be?
Is there sound in space? It's a common question, and the answer is often misrepresented in film and television (though producers are getting better at dealing with this issue). Recently, the question has become even more cloudy with the release of CDs from NASA that contain tracks of the different sounds in space. How can this be?
NASA Discovers a New Planet
Literally Planet X, especially if you use Roman numerals. NASA scientists have discovered a 10th planet in our solar system. The planet, larger than Pluto, was discovered using the Samuel Oschin Telescope at Palomar Observatory near San Diego, Calif. The discovery was announced today by planetary scientist Dr. Mike Brown of the California Institute of Technology in Pasadena, Calif., whose research is partly funded by NASA.
Literally Planet X, especially if you use Roman numerals. NASA scientists have discovered a 10th planet in our solar system. The planet, larger than Pluto, was discovered using the Samuel Oschin Telescope at Palomar Observatory near San Diego, Calif. The discovery was announced today by planetary scientist Dr. Mike Brown of the California Institute of Technology in Pasadena, Calif., whose research is partly funded by NASA.
Edmund Halley
Edmund Halley - More Than Just A Comet. Edmund Halley was born October 29, 1656 in Haggerston, Shoreditch, England. Thanks to a later change in the calendar system, his birth date is now considered to be November 8. His father, also Edmund, was a wealthy soap-maker in London. Besides his soap business, the elder Halley owned a number of properties in London.
Edmund Halley - More Than Just A Comet. Edmund Halley was born October 29, 1656 in Haggerston, Shoreditch, England. Thanks to a later change in the calendar system, his birth date is now considered to be November 8. His father, also Edmund, was a wealthy soap-maker in London. Besides his soap business, the elder Halley owned a number of properties in London.
blue moon
You've probably heard the phrase "once in a blue Moon", usually referring to a rare event. But where
You've probably heard the phrase "once in a blue Moon", usually referring to a rare event. But where
Moon Pictures Gallery
The Moon is the only natural satellite of the planet Earth. It was known as Luna to the Romans, Selene and Artemis to the Greeks, and many other names in other languages.
The Moon is the only natural satellite of the planet Earth. It was known as Luna to the Romans, Selene and Artemis to the Greeks, and many other names in other languages.
The Origin of Our Solar System
There have been no shortage of theories as to how our solar system formed. But it is now believed that the solar system formed from the collapse of a giant solar nebula some 4.5 billion years ago.
There have been no shortage of theories as to how our solar system formed. But it is now believed that the solar system formed from the collapse of a giant solar nebula some 4.5 billion years ago.
Saturn's Moon Titan
Discovered in 1655 by the Dutch astronomer Christiaan Huygens, Titan is the biggest of the 31 known moons orbiting Saturn. It is a cold world enclosed by a thick, hazy atmosphere impenetrable by telescopes and cameras. With an equatorial radius of 2,575 km (1,600 miles), Titan is the second largest moon in our solar system. It's bigger than our own moon and even the planet Mercury. Only Jupiter's moon Ganymede is larger than Titan, with a diameter barely 112 kilometers (62 miles) greater.
Discovered in 1655 by the Dutch astronomer Christiaan Huygens, Titan is the biggest of the 31 known moons orbiting Saturn. It is a cold world enclosed by a thick, hazy atmosphere impenetrable by telescopes and cameras. With an equatorial radius of 2,575 km (1,600 miles), Titan is the second largest moon in our solar system. It's bigger than our own moon and even the planet Mercury. Only Jupiter's moon Ganymede is larger than Titan, with a diameter barely 112 kilometers (62 miles) greater.
Stonehenge Monument
No one is really sure who built Stonehenge or why it was built. Early theories were that it was constructed by the Druids or even the Romans, but those theories were disproved in the 20th century, when it was shown that construction began on Stonehenge over 2,000 years before Celts, and later Romans, had even arrived in the area. Most people believe that Neolithic peoples of the British Isles started building the Stonehenge monument around 5,000 years ago.
No one is really sure who built Stonehenge or why it was built. Early theories were that it was constructed by the Druids or even the Romans, but those theories were disproved in the 20th century, when it was shown that construction began on Stonehenge over 2,000 years before Celts, and later Romans, had even arrived in the area. Most people believe that Neolithic peoples of the British Isles started building the Stonehenge monument around 5,000 years ago.
Pythagoras Pictures Gallery
Pythagoras, the son of Mnesarchus and Pythais, was born on the island of Samos, off the coast of Asia Minor (what is now mostly Turkey), about 569 BC. Besides his contributions to mathematics, Pythagoras was essential to the early field of astronomy. As Plato later would believe, Pythagoras felt the sphere was the perfect shape. This may have lead to his assertion that the Earth was a sphere. Unfortunately, the actual date or place of Pythagoras's death has been lost to history.
Pythagoras, the son of Mnesarchus and Pythais, was born on the island of Samos, off the coast of Asia Minor (what is now mostly Turkey), about 569 BC. Besides his contributions to mathematics, Pythagoras was essential to the early field of astronomy. As Plato later would believe, Pythagoras felt the sphere was the perfect shape. This may have lead to his assertion that the Earth was a sphere. Unfortunately, the actual date or place of Pythagoras's death has been lost to history.
Pluto Picture - Pluto
An artist's conception of Pluto and its moon Charon.
An artist's conception of Pluto and its moon Charon.
Maria Mitchell
Maria Mitchell - First Woman Astronomer in the US. Maria Mitchell discovered a comet in 1847. First US astronomer to belong to American Academy of Arts and Sciences and Association for the Advancement of Science. Maria Mitchell, astronomer, women's rights proponent, and antislavery activist.
Maria Mitchell - First Woman Astronomer in the US. Maria Mitchell discovered a comet in 1847. First US astronomer to belong to American Academy of Arts and Sciences and Association for the Advancement of Science. Maria Mitchell, astronomer, women's rights proponent, and antislavery activist.
Who Made the First Rockets?
Chinese began developing rockets. Although their early efforts were more like fireworks than modern rockets, they are direct ancesters of the devices used today to send the space shuttle into space.
Chinese began developing rockets. Although their early efforts were more like fireworks than modern rockets, they are direct ancesters of the devices used today to send the space shuttle into space.
Top 10 Most Massive Stars
The Milky Way Galaxy is filled with hundreds of billions of stars. And the Milky Way is only one of billions of galaxies. Some of these stars are only a fraction of the Sun's mass, while others are equivalent to hundreds of Suns. So what are the 10 most massive stars in the Universe?
The Milky Way Galaxy is filled with hundreds of billions of stars. And the Milky Way is only one of billions of galaxies. Some of these stars are only a fraction of the Sun's mass, while others are equivalent to hundreds of Suns. So what are the 10 most massive stars in the Universe?
Telescopes Between 1000 & 5000
If you have spent some time observing the sky with your naked eyes and a pair of binoculars, you may be ready to move on up to telescopes. As in most things in life, you typically get what you pay for. If you are looking for better telescopes to start out with, one which might carry you from a beginner to intermediate stargazer, check out these telescopes between $1000.00 and $5000.00.
If you have spent some time observing the sky with your naked eyes and a pair of binoculars, you may be ready to move on up to telescopes. As in most things in life, you typically get what you pay for. If you are looking for better telescopes to start out with, one which might carry you from a beginner to intermediate stargazer, check out these telescopes between $1000.00 and $5000.00.
Astronomy and Space Blogs
According to Sheila Ann Manuel Coggins, the About Guide to Weblogs, the definition of a Weblog or Blog
According to Sheila Ann Manuel Coggins, the About Guide to Weblogs, the definition of a Weblog or Blog
Guion "Guy" Bluford
Guion "Guy" Bluford, Jr. was born in Philadelphia, Pennsylvania, on November 22, 1942. His mother, Lolita
Guion "Guy" Bluford, Jr. was born in Philadelphia, Pennsylvania, on November 22, 1942. His mother, Lolita
Project Mercury Overview
Astronauts in the early days of the space race were true pioneers. It took the right stuff and more to join the group of astronauts known as the Mercury 7 Astronauts. Discover more about Project Mercury and the Mercury 7 astronauts.
Astronauts in the early days of the space race were true pioneers. It took the right stuff and more to join the group of astronauts known as the Mercury 7 Astronauts. Discover more about Project Mercury and the Mercury 7 astronauts.
NASA Spinoffs - Apollo Inventi
Every day, in a variety of ways, American lives are touched by space technology. Since 1976, about 1,400 documented NASA inventions have benefited U.S. industry, improved the quality of life and created jobs for Americans. The Apollo program has helped change the way of life in America, especially in health care. Here are some of the inventions contributed by the Apollo program.
Every day, in a variety of ways, American lives are touched by space technology. Since 1976, about 1,400 documented NASA inventions have benefited U.S. industry, improved the quality of life and created jobs for Americans. The Apollo program has helped change the way of life in America, especially in health care. Here are some of the inventions contributed by the Apollo program.
Farthest, Faintest Solar Sy...
Farthest, Faintest Solar System Objects Found Beyond Neptune - Kuiper Belt Object 2000 FV53. Astronomers using NASA's Hubble Space Telescope have discovered three of the faintest and smallest objects ever detected beyond Neptune. Each object is a lump of ice and rock — roughly the size of Philadelphia — orbiting beyond Neptune and Pluto.
Farthest, Faintest Solar System Objects Found Beyond Neptune - Kuiper Belt Object 2000 FV53. Astronomers using NASA's Hubble Space Telescope have discovered three of the faintest and smallest objects ever detected beyond Neptune. Each object is a lump of ice and rock — roughly the size of Philadelphia — orbiting beyond Neptune and Pluto.
Arcturus Information
Arcturus is the brightest star in the constellation Bootes, which is one of the oldest constellations in the night sky. It is the 4th-brightest star in the entire sky. Arcturus means bear guard, as it overlooks the constellation Ursa Major. It is an orange giant with a diameter about 10 times that of the sun and a luminosity about 100 times that of the sun. At about 36 light-years, Arcturus is one of the nearest giant stars. Arcturus is located in the constellation Bootes.
Arcturus is the brightest star in the constellation Bootes, which is one of the oldest constellations in the night sky. It is the 4th-brightest star in the entire sky. Arcturus means bear guard, as it overlooks the constellation Ursa Major. It is an orange giant with a diameter about 10 times that of the sun and a luminosity about 100 times that of the sun. At about 36 light-years, Arcturus is one of the nearest giant stars. Arcturus is located in the constellation Bootes.
supermassive black holes
Supermassive black holes are some of the most powerful objects in the Universe. These incredible objects hold entire galaxies together and are capable of releasing incredible amounts of energy. Their formation is still a mystery. And some believe they may hold the key to exotic subjects of science fiction like interstellar travel and, possibly, time travel.
Supermassive black holes are some of the most powerful objects in the Universe. These incredible objects hold entire galaxies together and are capable of releasing incredible amounts of energy. Their formation is still a mystery. And some believe they may hold the key to exotic subjects of science fiction like interstellar travel and, possibly, time travel.
Galileo Galilei
Galileo Galilei - Astronomer. Read about the life and work of Galileo Galilei, perhaps the greatest scientist of all time, who went from genius to heretic and back again. Galileo Galilei, first used telescopes for scientific purposes, refined telescopes beyond being toys, demonstrated key points of gravity, and modernized science. Read the biography of Galileo Galilei.
Galileo Galilei - Astronomer. Read about the life and work of Galileo Galilei, perhaps the greatest scientist of all time, who went from genius to heretic and back again. Galileo Galilei, first used telescopes for scientific purposes, refined telescopes beyond being toys, demonstrated key points of gravity, and modernized science. Read the biography of Galileo Galilei.
Betelgeuse Information
Betelgeuse is the tenth brightest star in the sky. It is a red supergiant about 13,000 times brighter than our sun and over 1000 times larger. If you placed Betelgeuse in the place of our sun, it would extend past the orbit of Jupiter. Its name is from the Arabic armpit, and is near the right shoulder of Orion. It is nearing the end of its life and will soon become a supernova. Betelgeuse is in the constellation Orion.
Betelgeuse is the tenth brightest star in the sky. It is a red supergiant about 13,000 times brighter than our sun and over 1000 times larger. If you placed Betelgeuse in the place of our sun, it would extend past the orbit of Jupiter. Its name is from the Arabic armpit, and is near the right shoulder of Orion. It is nearing the end of its life and will soon become a supernova. Betelgeuse is in the constellation Orion.
Rigil Kentaurus Information
Rigel Kentaurus, also known as Alpha Centauri, is the third brightest star in the sky. Its name literally means foot of the centaur. It is actually a triple star system made up of Alpha Centauri A, Alpha Centauri B, and Alpha Centauri C (also known as Proxima Centauri because it is the closet star to earth). Rigel Kentaurus is located in the constellation Centaurus.
Rigel Kentaurus, also known as Alpha Centauri, is the third brightest star in the sky. Its name literally means foot of the centaur. It is actually a triple star system made up of Alpha Centauri A, Alpha Centauri B, and Alpha Centauri C (also known as Proxima Centauri because it is the closet star to earth). Rigel Kentaurus is located in the constellation Centaurus.
Could a Gamma-ray Burst Destroy Life on Earth?
Gamma-ray Bursts (GRBs) are the most powerful events in the Universe. Despite being far, far away in distant galaxies, their radiation is detected - in significant quantities - here on Earth. This begs the question, could a GRB destroy life on Earth, particularly if it happened nearby?
Gamma-ray Bursts (GRBs) are the most powerful events in the Universe. Despite being far, far away in distant galaxies, their radiation is detected - in significant quantities - here on Earth. This begs the question, could a GRB destroy life on Earth, particularly if it happened nearby?
Hans Lippershey Biography
Hans Lippershey was born in Wesel (western Germany) around the year 1570. Little is known about his early life, but he eventually moved to Middelburg, the capital of Zeeland, the southwesternmost province of the Netherlands. Hans Lippershey was probably not the first person to experiment with combining lenses to create crude telescopes and binoculars. While others later claimed to have invented the device, it was Lippershey who applied to the government of the Ntherlands for a patent in 1608.
Hans Lippershey was born in Wesel (western Germany) around the year 1570. Little is known about his early life, but he eventually moved to Middelburg, the capital of Zeeland, the southwesternmost province of the Netherlands. Hans Lippershey was probably not the first person to experiment with combining lenses to create crude telescopes and binoculars. While others later claimed to have invented the device, it was Lippershey who applied to the government of the Ntherlands for a patent in 1608.
Explorer 1
Explorer 1 was the first satellite launched by the United States when it was sent into space on January 31, 1958. Following the launch of the Soviet Union's Sputnik 1 on October 4, 1957, the U.S. Army Ballistic Missile Agency was directed to launch a satellite using its Jupiter C rocket developed under the direction of Dr. Wernher von Braun. The Jet Propulsion Laboratory received the assignment to design, build and operate the artificial satellite that would serve as the rocket's payload.
Explorer 1 was the first satellite launched by the United States when it was sent into space on January 31, 1958. Following the launch of the Soviet Union's Sputnik 1 on October 4, 1957, the U.S. Army Ballistic Missile Agency was directed to launch a satellite using its Jupiter C rocket developed under the direction of Dr. Wernher von Braun. The Jet Propulsion Laboratory received the assignment to design, build and operate the artificial satellite that would serve as the rocket's payload.
Visiting Johnson Space Center
Space Center Houston, also known as Johnson Space Center is a place where people can experience space -- from its dramatic history and exciting present to its compelling future. Johnson Space Center Houston is the only place on Earth that gives guests an out-of-this-world journey through human adventures into space. Discover more about Space Center Houston here.
Space Center Houston, also known as Johnson Space Center is a place where people can experience space -- from its dramatic history and exciting present to its compelling future. Johnson Space Center Houston is the only place on Earth that gives guests an out-of-this-world journey through human adventures into space. Discover more about Space Center Houston here.
What is a Star?
When you gaze out into the darkness of space you will undoubtedly notice tiny balls of light shimmering in the night. What are these beautiful objects? Well, most of them are stars and there are billions upon billions of them out there waiting to be discovered.
When you gaze out into the darkness of space you will undoubtedly notice tiny balls of light shimmering in the night. What are these beautiful objects? Well, most of them are stars and there are billions upon billions of them out there waiting to be discovered.
History of NASA
Congress and the President of the United States created the National Aeronautics and Space Administration (NASA) on October 1, 1958. Learn more about the early days of NASA (National Aeronautics and Space Administration) history. Discover the impact the National Aeronautics and Space Administration (NASA) had on the world, especially the Cold War. NASA (National Aeronautics and Space Administration) continues to be an important part of the United States space program.
Congress and the President of the United States created the National Aeronautics and Space Administration (NASA) on October 1, 1958. Learn more about the early days of NASA (National Aeronautics and Space Administration) history. Discover the impact the National Aeronautics and Space Administration (NASA) had on the world, especially the Cold War. NASA (National Aeronautics and Space Administration) continues to be an important part of the United States space program.
Astronaut Costumes for Adults
Want an astronaut costume? From Halloween to costume parties to plays or skits, any time you need a costume, check out these space related costumes ideas for adults. From astronaut costumes to alien costumes ideas.
Want an astronaut costume? From Halloween to costume parties to plays or skits, any time you need a costume, check out these space related costumes ideas for adults. From astronaut costumes to alien costumes ideas.
Magnetars
Magnetars are highly magnetized neutron stars. The specifics of their creation is still a mystery, but recent data has begun to shed some light.
Magnetars are highly magnetized neutron stars. The specifics of their creation is still a mystery, but recent data has begun to shed some light.
Asteroid Belt
There are regular news reports of asteroids that are passing near Earth; some may even pose a threat to life on the surface. But where do these objects come from? Most of them come from a part of the solar system known as the asteroid belt.
There are regular news reports of asteroids that are passing near Earth; some may even pose a threat to life on the surface. But where do these objects come from? Most of them come from a part of the solar system known as the asteroid belt.
Time Travel Into the Future
Nearly all of us have wished, at one time or another, that we could travel through time. Whether it is to correct a mistake in the past, or to fast-forward to a much anticipated future event, the lure of time travel is unmistakable. But what does science say about time travel? Come along as we see whether it is possible to travel into the future.
Nearly all of us have wished, at one time or another, that we could travel through time. Whether it is to correct a mistake in the past, or to fast-forward to a much anticipated future event, the lure of time travel is unmistakable. But what does science say about time travel? Come along as we see whether it is possible to travel into the future.
Sir Isaac Newton Quotations
Quotations from and about Sir Isaac Newton, the man who developed the laws of universal gravitation.
Quotations from and about Sir Isaac Newton, the man who developed the laws of universal gravitation.
Vega Information
Vega is the fifth brightest star in the sky. Its name comes from the Arabic for the swooping eagle. Vega is about 26 light-years from Earth. It is three times the size of the sun and 50 times as luminous. Vega is located in the constellation Lyra.
Vega is the fifth brightest star in the sky. Its name comes from the Arabic for the swooping eagle. Vega is about 26 light-years from Earth. It is three times the size of the sun and 50 times as luminous. Vega is located in the constellation Lyra.
Telescopes Between \$300 - \$500
If you have spent some time observing the sky with your naked eyes and a pair of binoculars, you may be ready to move on up to a telescope. As in most things in life, you typically get what you pay for. If you are looking for a better telescope to start out with, one which might carry you from a beginner to intermediate stargazer, check out these beginner's telescopes ranging from $300 to $500.
If you have spent some time observing the sky with your naked eyes and a pair of binoculars, you may be ready to move on up to a telescope. As in most things in life, you typically get what you pay for. If you are looking for a better telescope to start out with, one which might carry you from a beginner to intermediate stargazer, check out these beginner's telescopes ranging from $300 to $500.
Science Fair Project Ideas
Astronomy Science Fair Projects Ideas. Take a look at these astronomy science fair projects ideas to see if they can help you come up with your own plan. Remember, these ideas are just a starting point for planning your astronomy science fair projects. You will still need to use the scientific method to completely map out your astronomy science fair projects.
Astronomy Science Fair Projects Ideas. Take a look at these astronomy science fair projects ideas to see if they can help you come up with your own plan. Remember, these ideas are just a starting point for planning your astronomy science fair projects. You will still need to use the scientific method to completely map out your astronomy science fair projects.