Space / Astronomy: Most Popular Articles
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.
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.
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.
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.
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.
You can see thousands of stars when you look up at night. Here are the Top 10 Closest Stars to our solar system.
It was July 20, 1969 when Neil Armstrong spoke what must be considered the most famous words of the 20th century,
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.
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?
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?
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.
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.
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.
Free Basic Astronomy course. Astronomy 101 - Pass a simple 20 question quiz to receive your certificate.
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.
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.
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.
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.
A short retrospective about the Apollo 11 mission and what it means for us 45 years later.
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.
Our galaxy's central black hole gives hints about how supermassive black holes grow.
A look at five current research areas in astronomy and recent results.
When the Challenger explosion occurred, it shocked the nation, started a NASA investigation, and led to many changes in the shuttle program.
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.
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.
Constellations information. Discover more about each of the 88 modern constellations. Find the names, information, and pictures of the 88 constellations.
Top ten rock - pop songs with a space theme including lyrics. These rock - pop songs including lyrics are all dedicated to the space age. Page 2.
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?
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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.
Venus, the second planet from the Sun, is often referred to as Earth's Sister. While similar in size to Earth, the atmosphere is vastly different.
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.
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.
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.
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?
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.
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.
Whether you're 1 or 100, the Huntsville Space Center has something for you! Visit the greatest rocket and space memorabilia collection anywhere.
We've all heard the phrase. Space / Astronomy.
Visiting the Stennis Space Center. StenniSphere, Stennis Space Center's award winning visitors center, offers exciting new exhibits and stage shows. Travel to the Red Planet! Land the Space Shuttle! Go aboard the International Space Station!
You can view free sky maps as seen from various cities around the globe. Your Guide offers this online planetarium which gives you three ways to view the sky and produce free sky maps.
You'll have a stellar time learning about our solar system and the stars with these home planetariums. All you need is a dark room and an imaginations (and batteries of course). Help your kids begin their journey into astronomy with some great educational toys.
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.
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.
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?
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.
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 Houston Space Center, also known as the Johnson Space Center, is a place where you can experience space in all its drama and excitement.
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?
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. . Page 12.
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.
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.
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.
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.
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?
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.
The Sun provides energy for life to exist on Earth as well as the gravitational force to keep the planets in orbit. Here you will find basic information.
Born on August 5, 1930, Neil Armstrong became the first man on the moon during the Apollo 11 mission. Read quotes by and about Neil Armstrong.
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.
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.
If mankind is ever to conquer the cosmos it will be necessary for humans to procreate in outer space. But it turns out that this is currently easier said than done. There are significant barriers that stand in the way of women getting pregnant in space. The most immediate impact will be on any future plans to send astronauts to Mars for an extended stay.
The Space Shuttle Challenger disaster, a NASA tragedy. When the space shuttle Challenger exploded killing all aboard, it shocked the nation, started a NASA investigation, and led to many changes in the space shuttle program. Page 2.
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 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.
Discover the basics of telescope astronomy with this guide. Telescopes come in three basic designs; Refractor, Reflector, and Catadioptric.
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.
According to Sheila Ann Manuel Coggins, the About Guide to Weblogs, the definition of a Weblog or Blog
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.
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.
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.
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?
Meteors are bits of material falling through Earth's atmosphere. Read more to find out how much meteoric material falls each day.
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.
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.
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.
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.
A demonstration of the workings of the Apollo 11 Command Module computer This video clip is from the Apollo missions.
So, who did invent the telescope? Learn this and other space and astronomy-related frequently asked questions here.
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.
Ever since Alan Shepard's history making flight in 1961, NASA astronauts have relied on spacesuits to help them work and keep them safe. From the shiny silver of the Mercury suit to the orange
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!
There have been countless media reports recently claiming, with various levels of veracity, that NASA had detected evidence of life on Titan, the largest moon of Saturn. The fact is, simply, that this claim is misleading at best. The truth is not so clear cut. So what does science really say about life on other worlds?
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.
Supernovae (plural form of supernova) are the most violent events in the Universe. The energy emitted during an event can outshine an entire galaxy of billions of stars. The result of a massive star dying, they are fascinating to study, and brilliant to behold.
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.
Print these free astronomy and space posters from your home computer to create your own astronomy and space posters.
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.
Now, stay informed with these top astronomy and space magazines which deal with astronomy & astronomers as well as space exploration from the early days into the future. Discover new space and astronomy magazines to bring you the news that interests you.
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.
The biography of Valentina Tereshkova, the first woman in space. The USSR sent Tereshkova into space many years before NASA sent astronaut Sally Ride.
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 beginner's telescopes ranging from $500 to $1000.
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.
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.
When the Sun, Earth and Moon are aligned, the Earth will cast a shadow on the Moon creating a phenomenon known as a lunar eclipse. These events have been the subject of mythology and lore, but are readily explained by science.
Aristotle was so impressive as a student at Plato's academy that he soon became a teacher, and a pioneer in physics and astronomy. Read his biography. Page 3.
These astronomy & space activities can keep you or your kids busy while they are learning and having fun at the same time.
Do you need to buy a gift for someone who has an interest in astronomy or space exploration? Here's some great information to have on hand before going to the store or retail website to purchase gifts with an astronomy or space twist. We've divided them by type of recipient.
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.
Grab yourself the hottest videogaming value around with the incredible Microsoft XBox and Xbox 360. This amazing system has taken the gaming world by storm. The Xbox by Microsoft gives players the speed of a cutting edge PC and the easy-of-use of a video game system.
One of the theoretical consequences of general relativity is the existence of regions of space known as wormholes. While it is not completely understood how such places are created, there is currently no observational evidence to prove that they do, they could provide a means of traveling across the Universe nearly instantaneously. So what is this mysterious phenomenon and will we ever be able to harness their potential?
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.
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.
Andromeda, daughter of Cepheus and Cassiopeia. - Genitive: Andromedae Abbreviations: And, Andr Right Ascension, (h): 1 Declination, (deg): 40N
Supernovae are some of the most dynamic events in the Universe. They create such intense explosions that the light that they emit can outshine entire galaxies. But the compact objects that are left behind are also incredibly powerful as well.
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.
It has been over 37 years since man has set foot on the Moon. Recently NASA began making preparations for our return. But is this a good idea? Is it worth risking human life for such a dangerous undertaking?
From the people who brought you Google Earth, there's a new product called Sky, a new feature that enables users of Google Earth to view the sky as seen from planet Earth. This virtual telescope will allow users to float through the skies via Google Earth. Sky will come as a simple click from the Google Earth interface.
Model rocketry is a great tool for learning about space exploration and physics. It is also a fun hobby. Blast your own model rockets into space with this fun and exciting hobby. Here, we feature some of the best skill level 2 (two) and 3 (three) model rocket kits. Find the model rocket kit that is right for you.
In addition to his contributions in mathematics, Pythagoras was essential to the early field of astronomy. Read his biography here.
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.
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.
If you have spent some time observing the sky with your naked eyes, you may be considering moving on to a telescope. Purchasing your first telescope can be a daunting task. Before you buy a telescope, use this guide to help in your decision process. Before You Buy a Telescope
On January 28, 1986, the world lost one of its greatest resources, Christa McAuliffe, the space shuttle Challenger astronaut teacher.
Earth Globe 11/20/1998 . Space / Astronomy. Page 17.
Astronomy 101 - Astronomy History - Seeing Is Believing - Lesson 2: History - A Renaissance in Science
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.
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?
Are you ready to move on up to a better telescope? As in most things in life, you typically get what you pay for. Do you want to become a serious amateur or even a professional? Check out these telescopes over $10000.00. With these telescopes, portability is definitely less of a factor. In fact, if you have plans to build your own observatory, here's the place to start.
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.
How Many Stars Can You See At Night? Frequently Asked Questions About Space - Basics Series; What You Need To Know About Space. Discover the answers to some frequently asked questions about space.
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.
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?
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.
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.
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.
On January 27, 1967, the crew of Apollo/Saturn 204 (commonly known as Apollo 1) were training for an Earth orbiting mission when tragedy struck.
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.
The planet Uranus is the seventh planet from the Sun, and while it does have some commonalities with its neighbor Neptune, it is also very unique in many ways. This large, gaseous, somewhat icy and undeniably beautiful planet has been acknowledged for millennia, but was curiously re-discovered in 1781 by Sir William Herschel.
One of the revelations of Albert Einstein's theory of relativity was that the speed of light in a vacuum was a constant and that nothing could travel faster. But what is the speed of light, exactly?
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.
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.
We've all received emails that make fantastic claims. Most of the time they are fantasy, or full of half-truths. One such email that has made the rounds claims that NASA discovered the missing day from the Bible. Is there any truth to the story, or is it a bunch of hogwash?
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.
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.
Everyone has to start somewhere. 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. Still, even though you want to have the best, it may not be a great idea to spend a lot of money until you're sure you will get your money's worth. Check here for some great reflectors and refractors. Less expensive telescopes.
While our Sun is of above average mass compared to other stars in our galaxy, it is still quite small compared to the most massive stars around. There are more than a dozen stars known to have masses form than 100 times that of our central star. Most of these stars are classified as hypergiants.
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.
A quick look at some ways to start learning astronomy that involve books, software, TV, movies, and a visit to your local planetarium.
The microwave band is actually a subset of the broader radio band. But when the term
Rotation and revolution are vital to the study of astronomy, as virtually all heavenly bodies undergo some rotational dynamics of some sort. But what are rotation and revolution exactly, and how are they different?
On of the tenets of stellar evolution holds that main sequence stars more than 25 times the mass of the Sun will eventually transition to a black hole in a brilliant supernova explosion. However, recent results appear to challenge that theory. Are we are the verge of a realignment of our current understanding, or is there another answer?
Discover Pluto Pictures and images in this Pluto Pictures Gallery. The former ninth planet from the sun, these dwarf planet Pluto pictures are amazing.
Astronomy 101 - Lesson 4 - Big Numbers For a Big Universe. Learn how we use astronomical units to measure our solar system - light years for our galaxy and parsecs and scientific notation for the universe. Discover the meaning of big numbers like astronomical units light years and parsecs and how to write them in scientific notation for the measurement of our universe.
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.
Because of the fascination that black holes hold for many people, several movies have been made over the years with black holes central to the theme. Many are campy, while some have better plots, if still not very accurate scientifically. Hopefully, you'll find one here that strikes your fancy.
We thought that we were so close. Einstein's theories of relativity gave us a framework to explain the motion and dynamics of the Universe on a large scale. But as we sought to apply his equations to the motion of galaxies we found that the equations didn't match the data. So either relativity theory is wrong, or some other mysterious forces are at play. But which is it?
: Is There Such a Thing as a Planet Sound? You can go on eBay right now (NASA has stopped producing copies
In the classic television and film series Star Trek, space craft are said to be able to travel faster than the speed of light using a special technology called
By the year 2011, the space shuttles will be retired, and with them an era will be brought to a close. An era that has seen space exploration reach incredible highs and, occasionally, devastating lows. But with the end comes new beginnings, and so we begin the era of the Constellation Project.
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.