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Space/Astronomy: Most Popular Articles

These articles are the most popular over the last month.
10 Brightest Stars in the Milky Way Galaxy
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.
Did You Know There Are 7 Different Types of...
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.
The Big Bang Theory Explained
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.
10 Things Everyone Should Know 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.
Hanky-panky in Space?
One of the most popular questions fielded by astronauts posits the idea of sex in space. This article examines the physical issues around this touchy subject.
Solar System Tour - Visit Our Galactic...
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.
Free Sky Maps - Cities Around The World
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.
Discover the 10 Closest Stars to Earth
You can see thousands of stars when you look up at night. Here are the Top 10 Closest Stars to our solar system.
10 Surprising Facts You Should Know 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.
Top 10 Largest Stars in the 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.
What do You Weigh on Other Worlds?
What's your weight on other worlds? This article gives you a quick understanding of weight, mass and gravity.
Is There Such a Thing as a Planet Sound?
: Is There Such a Thing as a Planet Sound? You can go on eBay right now (NASA has stopped producing copies
Constellations Pictures Gallery
Constellations information. Discover more about each of the 88 modern constellations. Find the names, information, and pictures of the 88 constellations.
Why Time Travel May Actually Be Possible
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?
Astronomy 101: Introduction to the Basics
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.
10 Incredible (and Strange!) 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.
How is "Uranus" Pronounced?
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?
An Introduction to the Pioneers and Branches of...
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.
What Are the 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.
Astronauts of Project Mercury
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.
Early History of Astronomy: Ancient Astronomers...
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.
What Exactly 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.
Basic Information about the Sun
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.
6 Things to Know Before Buying 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.
Everything You Need to Know About Venus, the...
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.
10 Things You Need to Know 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.
United States Astronomy Schools - Colleges and...
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.
NASA Discovers a New Planet In Our Solar System
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.
Astronomy 101 - Final Exam
Free Basic Astronomy course. Astronomy 101 - Pass a simple 20 question quiz to receive your certificate.
How Do We Stop Asteroids from Destroying 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?
Top 7 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.
How Did Neil Armstrong Become the First Man on...
It was July 20, 1969 when Neil Armstrong spoke what must be considered the most famous words of the 20th century,
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.
Challenger Explosion - A NASA Tragedy
When the Challenger explosion occurred, it shocked the nation, started a NASA investigation, and led to many changes in the shuttle program.
Introducing Sky in Google Earth
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.
What Are 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.
How Many Habitable Planets are in the Milky Way...
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.
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?
10 Things You May Not Know 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.
Can You Name the Brightest Star in the Sky?
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.
A New Look at Our Solar System
This isn't our parents' solar system anymore. In the last 50 years, our views of the Sun, planets, moons, rings, asteroids, and comets have changed with new discoveries.
Earth - Our Home
Earth - Pictures and Astronomy Facts - Solar System Planetary Astronomical Data and Images of Earth. Earth. Astronomy Guide to Space exploration close to home. Information on our solar system. Earth planetary data and graphics.
Top 8 Telescopes Between 1000 and 5000 Dollars
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 Kids' Guide to the Sun and Planets
A collection of facts about the solar system for kids and students to learn and enjoy.
Constellations Pictures - Andromeda - Picture...
Andromeda, daughter of Cepheus and Cassiopeia. - Genitive: Andromedae Abbreviations: And, Andr Right Ascension, (h): 1 Declination, (deg): 40N
10 Basic 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.
Have Aliens Walked Among Us?
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.
The Basics of Telescopes
Discover the basics of telescope astronomy with this guide. Telescopes come in three basic designs; Refractor, Reflector, and Catadioptric.
Perseid Meteor Shower
Perseid Meteor Shower - A Spectacular Astronomy Fireworks Show. April showers bring May flowers, they say, so, what does a shower in August bring? Meteors. The Perseid Meteor Shower, to be exact. Like a messy tourist, the comet Swift-Tuttle passed through our solar system in 1863 & 1992 leaving behind its trash; tiny grains of ice, dust, rock, & other debris. As the Earth makes its trip around the sun, we pass through this debris field with some spectacular results, The Perseid Meteor Shower.
Top 10 Quotes by Neil Armstrong, the First Man...
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.
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?
More Songs About Space from Pop Music
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.
Matter-Antimatter Power on Star Trek
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?
Top 10 Astronomy and Space Weblogs (Blogs)
According to Sheila Ann Manuel Coggins, the About Guide to Weblogs, the definition of a Weblog or Blog
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. . Page 12.
Visiting the Stennis Space Center
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!
What Happens to the Human Body in a Vacuum?
class="no-js" itemscope itemtype="http://schema.org/Article" > itemprop="description" >In the 1981 movie
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. Page 8.
What Can History Teach Us About Future Solar...
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?
Astronomy and Space FAQs
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.
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.
Does Life Exist Elsewhere 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.
Exploring the Universe
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.
Constellations Pictures - Antlia - Picture of...
The Water Pump - Genitive: Antliae Abbreviations: Ant, Antl Right Ascension, (h): 10 Declination, (deg): 35S . Page 2.
Top 7 Beginner's Telescopes Between 300.00 and...
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.
Was the Apollo 13 Space Exploration Mission...
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.
Visit Pluto: the King of the Kuiper Belt
Pluto is a distant and intriguing world in the solar system. Let's visit!
Astronomy 101 - Modern Astronomy
Astronomy 101 - Modern Astronomy - Lesson 3: Astronomy Enters the Twentieth Century
Does the U.S. Military Have a Secret Space...
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?
Astronomy and Space Timeline
Astronomy and Space History Timeline. The history of astronomy and space exploration timeline.
Earth Pictures - First View of Earth from Moon
The world's first view of Earth taken by a spacecraft from the vicinity of the Moon. - The photo was transmitted to Earth by the United States Lunar Orbiter I and received at the NASA tracking station at Robledo De Chavela near Madrid, Spain. This crescent of the Earth was photographed August 23, 1966 at 16:35 GMT when the spacecraft was on its 16th orbit and just about to pass behind the Moon. . Page 13.
Were the Apollo Moon Landings a 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.
What is 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.
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.
When Can We Expect to See Halley's Comet Next?
Comet Halley has stoked the interest of skywatchers for centuries as it returns to swoop around the Sun about every 76 years.
Top 8 Telescopes Between 500 and 1000 Dollars
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.
Astronomy 101 - Astronomy History - Seeing Is...
Astronomy 101 - Astronomy History - Seeing Is Believing - Lesson 2: History - A Renaissance in Science
Earth Pictures - Earth Globe
Earth Globe 11/20/1998 . Space / Astronomy. Page 17.
Should Pluto Be a Planet? Why the Debate...
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?
11 Things About Jupiter You Probably Didn&rsquo...
Jupiter, the king 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.
M. Scott Carpenter Biography
M. Scott Carpenter was both an Astronaut and an Aquanaut. M. Scott Carpenter was born in Boulder, CO, on May 1, 1925. M. Scott Carpenter was commissioned in the US Navy in 1949. M. Scott Carpenter flew the second American manned orbital flight on May 24, 1962.
Check out astronomy and space-related magazines!
These magazines provide good sources of information about astronomy and stargazing, and most have online presences too.
Pluto Picture - Pluto Not Yet Explored
Cold, distant, Pluto was the only planet in our Solar System which had not been visited by a spacecraft
Can Women Get Pregnant in Outer Space?
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.
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.
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?
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.
The 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?
Space Shuttle Challenger Disaster - A NASA...
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.
Top 10 Beginner's Telescopes Under 300.00
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.
10 Interesting Facts About the Planet Venus
Venus is a planet that has fascinated people for centuries. Modern scientific studies show that it is not a habitable planet.
5 Solar System Secrets... Revealed!
Let's see what's new in the solar system and its many worlds!
Did NASA Find the Missing Day from the Bible?
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?
The Untold Story of the Teacher Who Died on the...
On January 28, 1986, the world lost one of its greatest resources, Christa McAuliffe, the space shuttle Challenger astronaut teacher.
Onwards to Pluto!
Onwards to Pluto! Take a look at the New Horizons mission to Pluto and the outer solar system. The close flyby is in July 2015.
Constellations Pictures - Apus - Picture of the...
The Crow - Genitive: Apodis Abbreviations: Aps, Apus Right Ascension, (h): 16 Declination, (deg): 75S . Page 3.
Is There a 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.
Saturn - Ringed Planet - 6th From Sun
Saturn - Pictures and Astronomy Facts - Solar System Planetary Astronomical Data and Images of Saturn. Saturn. Astronomy Guide to Space exploration close to home. Information on our solar system. Saturn planetary data and graphics.
What Causes the Seasons on Earth
This is one of the most misunderstood concepts. Perhaps the confusion arises out of our everyday experiences with heat and temperature, perhaps it is just a lack of education on the matter. But ultimately, it seems most people don't have a clear understanding of Earth's seasons. So what are the reasons for the seasons?
Top 5 Fictional Black Holes Movies
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.
The Sun Quiz - Try Your Luck Out on The Simple...
The Sun Quiz - Try Your Luck Out on The Simple Quiz About The Sun.
Mercury - Thief In The Night - First Planet
Mercury - Pictures and Astronomy Facts - Solar System Planetary Astronomical Data and Images of Mercury. Mercury. Astronomy Guide to Space exploration close to home. Information on our solar system. Mercury planetary data and graphics.
Free Astronomy and Space Posters - Printable...
Print these free astronomy and space posters from your home computer to create your own astronomy and space posters.
Will the U.S. Really Stop Sending People to...
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.
Top 10 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.
Neutron Stars
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.
L. Gordon Cooper Jr. Biography
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What Kind of Telescope Should I Get?
The question is: What telescope should I buy for my friend/loved one/child/myself? Here are some thoughts about that, with some blunt advice on what NOT to do.
Pluto Picture - Sedna Size Comparisons
The artist's rendition shows the newly discovered planet-like object, dubbed "Sedna," in relation to
Constellations Pictures - Aquarius - Picture of...
The Water Carrier - Genitive: Aquarii Abbreviations: Aqr, Aqar Right Ascension, (h): 23 Declination, (deg): 15S . Page 4.
Donald K. Slayton Biography
Mr. Slayton was named as one of the Mercury astronauts in April 1959. He was originally scheduled to pilot the Mercury-Atlas 7 mission but was relieved of this assignment due to a heart condition discovered in August 1959. Slayton became Coordinator of Astronaut Activities in September 1962 and was responsible for the operation of the astronaut office. Born March 1, 1924, in Sparta, Wisconsin. Died June 13, 1993. He is survived by wife, Bobbie, and son, Kent.
How Are Astronomy, Astrophysics, and Astrology...
A comparison of the terms astronomy, astrophysics and astrology. Often confused, the differences and similarities are analyzed and discussed.
Visiting the Huntsville Space Center
Whether you're 1 or 100, the Huntsville Space Center has something for you! Visit the greatest rocket and space memorabilia collection anywhere.
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.
Moon Phases - Yearly Moon Phases Through 2025
Moon Phases From New Moons to Full Moons - Yearly Moon Phases Through 2025 Below are the moon phases
Pluto Picture - The Surface of Pluto
The never-before-seen surface of the distant planet Pluto is resolved in these NASA Hubble Space Telescope pictures, taken with the European Space Agency's (ESA) Faint Object Camera (FOC) aboard Hubble. Discovered in 1930, Pluto has always appeared as nothing more than a dot of light in even the largest Earth-based telescopes because Pluto's disk is much smaller than can be resolved from beneath the Earth's turbulent atmosphere. Page 11.
Composition of the Universe
One of the major revelations of the last quarter century is that there seems to be more that we don't see, than what we do. We throw around words like Dark Energy and Dark Matter, but what are these things and what role do they play in the composition of the Universe?
Visit Neptune: The Most Distant Planet
Neptune is one of the most interesting objects in our solar system . It shares similarities with its
Top 10 Astronomy Books for Kids
Top astronomy books for kids. Start your kids off right with these top astronomy books for kids.
Earth Pictures - First Picture of the Earth and...
This picture of the Earth and Moon in a single frame, the first of its kind ever taken by a spacecraft, was recorded September 18, 1977, but NASAs Voyager 1 when it was 7.25 million miles (11.66 million kilometers) from Earth. The moon is at the top of the picture and beyond the Earth as viewed by Voyager. In the picture are eastern Asia, the western Pacific Ocean and part of the Arctic. Page 14.
Virgil I. Grissom Biography
Virgil I. Grissom was born April 3, 1926, in Mitchell., Indiana. Lieutenant Colonel Grissom died on January 27, 1967, in the Apollo spacecraft flash fire during a launch pad test at Kennedy Space Center, Florida. He is survived by his wife Betty and their two children.
John H. Glenn, Jr, Former Astronaut, Former...
Astronaut Biography - John Herschel Glenn, Jr. The life of John H. Glenn, Jr, Former Astronaut, Former Senator, American Hero. On February 20, 1962, atop an Atlas rocket, he rode into space and piloted the Friendship 7 spacecraft around the globe three times, becoming the first American to orbit the earth. In 1998, he became the oldest person to launch into space.
The Surprising Origin of the Phrase "Once in a...
We've all heard the phrase. Space/Astronomy.
The Planet Uranus
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.
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.
Who Really Invented the Telescope? (Hint: It...
So, who did invent the telescope? Learn this and other space and astronomy-related frequently asked questions here.
Mars Through MOM's Eyes!
The Mars Orbiter Mission is snapping and sending back images of Mars from low-Mars orbit as the spacecraft also studies the planet's atmosphere.
Epsilon Eridani Information
Epsilon Eridani (tenth closest star to Earth) is the closest star known to have a planet (Epsilon Eridani b), and an unconfirmed second planet (Epsilon Eridani c). While it is smaller, cooler and slightly less luminous than our own sun, Epsilon Eridani is visible to the naked eye. It is the third closest star that is viewable without a telescope.
Earth Pictures - Earth from Apollo 8
This is how the Earth looked as photographed from a point near the Moon by the Apollo 8 astronauts. The Earth fills less than one percent of the frame exposed through 80mm lens. North is approximately vertical. Kinda lonely, isn't it? . Page 18.
Astronomy 101 - Big Numbers
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.
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.
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.
Alan B. Shepard Jr. Biography
Rear Admiral Shepard was one of the Mercury astronauts named by NASA in April 1959, & he holds the distinction of being the first American to journey into space. On May 5, 1961, in the Freedom 7 spacecraft, he was launched by a Redstone vehicle on a ballistic trajectory suborbital flight, which carried him to an altitude of 116 statute miles & to a landing point 302 statute miles down the Atlantic Missile Range. Born November 18, 1923, in East Derry, New Hampshire. Died on July 21, 1998.
The Death of Tycho Brahe
Astronomy Tycho Brahe is noted as one of the most important astronomers of the late 16th century. Among other things he observed that the heavens were not constant, but instead consisted of complex systems not bound to celestial spheres has had been asserted by Ptolemy and others. Upon his death in 1601 his work passed on to his pupil Johannes Kepler. Recently questions have been raised about the circumstances of his death with some asserting foul play. Was he in fact murdered?
Aristotle Biography
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.
All About the Moon
Man has wondered about the Moon since the dawn of reason. But it has only been in the last several decades that we have come to truly understand the Moon's nature and beginnings. Come and explore the most interesting facts about the Moon.
Top Toy Planetariums
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.
5 U.S. Vacation Spots to Learn About Astronomy
Introducing a story about places to visit if you're interested in astronomy and space.
Sun Pictures Gallery
Discover Sun Pictures and images in this Sun Pictures Gallery. These Sun pictures are tell a story about our galactic neighborhood and the closest star, our sun.
Top 3 Telescopes Over \$10,000.00
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.
Sir Isaac Newton
Biography of Sir Isaac Newton, the man who developed the laws of universal gravitation. Page 2.
Valentina Tereshkova Biography
The biography of Valentina Tereshkova, the first woman in space. The USSR sent Tereshkova into space many years before NASA sent astronaut Sally Ride.
Is Dark Matter Real?
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?
Hubble Space Telescope
NASA's first space-based telescope was named for American astronomer Edwin P. Hubble. It was launched in April, 1990 from space shuttle Discovery.
Lunar Eclipses
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.
What is a Planet?
What is a planet? It is one of the questions that I get most often in my astronomy class, and its a question that is at the source of great controversy. In 2006 the International Astronomical Union decided to answer that question and in doing so stripped Pluto of its planet-hood. The resulting fallout has caused rifts within the scientific community. All because of one, simple question: what is a planet?
Constellations Pictures - Ara - Picture of the...
The Altar - Genitive: Arae Abbreviations: Ara, Arae Right Ascension, (h): 17 Declination, (deg): 55S . Page 6.
Space Station - The International Space Station
Our Space Station, the International Space Station has a mission to enable long-term exploration of space & provide benefits to people on Earth. The International Space Station creates a permanent orbiting science institute in space. Medical research will also be conducted aboard the International Space Station. Just a few of the benefits which will be derived from the International Space Station.
Astronomy 101 - Learning About Stars
Astronomy 101 - Learning About Stars - Lesson 5: The Universe Has Gas - So, Where Do Stars Come From and Where Will They Go?
Earth Pictures - Global View of Earth in the...
This near-infrared photograph of the Earth was taken by the Galileo spacecraft at 6:07 a.m. PST on Dec. 11, 1990, at a range of about 1.32 million miles. The camera used light with a wavelength of 1 micron, which easily penetrates atmospheric hazes and enhances the brightness of land surfaces. South America is prominent near the center; at the top, the East Coast of the United States, including Florida, is visible. The West Coast of Africa is visible on the horizon at right. . Page 10.

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