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Space/Astronomy: Most Popular Articles

These articles are the most popular over the last month.
Meet Charon: Pluto's Companion World
The New Horizons mission revealed the fascinating surface of Pluto's moon Charon.
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.
New Horizons has Flown by Pluto!!!
New Horizons sends back its last view of one side of Pluto. The adventure continues!
Pluto has a Methane Haze
The New Horizons spacecraft imaged Pluto for hours after it made its closest approach to the planet. Among its many exciting discoveries, it showed that Pluto has methane hazes in its atmosphere.
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.
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.
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.
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 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.
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.
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.
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 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.
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?
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.
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?
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.
Constellations Pictures Gallery
Constellations information. Discover more about each of the 88 modern constellations. Find the names, information, and pictures of the 88 constellations.
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
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.
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.
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.
5 Solar System Secrets... Revealed!
Let's see what's new in the solar system and its many worlds!
All About Guion 'Guy' Bluford, the First...
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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.
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.
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.
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.
Pluto Picture - Sedna Size Comparisons
The artist's rendition shows the newly discovered planet-like object, dubbed "Sedna," in relation to
Astronomy 101 - Final Exam
Free Basic Astronomy course. Astronomy 101 - Pass a simple 20 question quiz to receive your certificate.
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.
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?
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?
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.
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.
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.
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.
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.
Pluto Picture - Pluto
An artist's conception of Pluto and its moon Charon. . Page 6.
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.
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?
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.
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.
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.
Pluto Picture - Pluto & Charon Eclipse a Triple...
Occasionally, a planet in our Solar System will pass in front of a bright star. Since stars and planets take up so little space on the sky, such events are quite rare. Two months ago, however, Pluto and its large moon Charon passed in front of a comparatively bright triple star system known as P126. By noting how P126 A dimmed, the event was useful for studying Pluto's relatively unknown atmosphere. Page 7.
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?
The Surprising Origin of the Phrase "Once in a...
We've all heard the phrase. Space/Astronomy.
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.
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?
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
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.
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.
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,
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.
The Basics of Telescopes
Discover the basics of telescope astronomy with this guide. Telescopes come in three basic designs; Refractor, Reflector, and Catadioptric.
Check out astronomy and space-related magazines!
These magazines provide good sources of information about astronomy and stargazing, and most have online presences too.
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.
The Moons of Pluto
The ongoing exploration of the planet Pluto includes looks at its moons Charon, Nix, Hydra, Styx, and Kerberos. This article focuses on Nyx and Hydra.
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. Page 2.
Cosmic Beauty
A trip through just a few of Hubble Space Telescope's many beautiful space images.
A Kids' Guide to the Sun and Planets
A collection of facts about the solar system for kids and students to learn and enjoy.
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.
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.
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
Pluto Picture - Hubble Space Telescope image of...
European Space Agency (ESA) Faint Object Camera (FOC) image was taken by the Hubble Space Telescope (HST)
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.
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.
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?
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.
The Brightest Star in the Nighttime Sky
Sirius, also known as the Dog Star, is the brightest star in the sky. Learn more about it here.
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 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.
Earth Pictures - Earth Globe
Earth Globe 11/20/1998 . Space / Astronomy. Page 17.
Pluto Picture - Map of Pluto's Surface
This is the first image-based surface map of the solar system's most remote planet, Pluto. This map was assembled by computer image processing software from four separate images of Pluto's disk taken with the European Space Agency's (ESA) Faint Object Camera (FOC) aboard NASA's Hubble Space Telescope. Hubble imaged nearly the entire surface, as Pluto rotated on its axis in late June and early July 1994. Page 4.
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.
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.
Pluto Picture - NASA's Hubble Reveals Possible...
Using NASA's Hubble Space Telescope to view the ninth planet in our solar system, astronomers discovered Pluto may have not one, but three moons. If confirmed, the discovery of the two new moons could offer insights into the nature and evolution of the Pluto system; Kuiper Belt Objects with satellite systems; and the early Kuiper Belt. The Kuiper Belt is a vast region of icy, rocky bodies beyond Neptune's orbit. Page 5.
Pluto Picture - Hubble Portrait of the "Double...
This is the clearest view yet of the distant planet Pluto and its moon, Charon, as revealed by NASA's Hubble Space Telescope (HST). The image was taken by the European Space Agency's Faint Object Camera on February 21, 1994 when the planet was 2.6 billion miles (4.4 billion kilometers) from Earth; or nearly 30 times the separation between Earth and the sun. Hubble's corrected optics show the two objects as clearly separate and sharp disks. Page 2.
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.
The Mountains of Pluto!
The early images and data from Pluto and Charon are amazingly different from what scientists expected!
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.
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?
Constellations Pictures - Andromeda - Picture...
Andromeda, daughter of Cepheus and Cassiopeia. - Genitive: Andromedae Abbreviations: And, Andr Right Ascension, (h): 1 Declination, (deg): 40N
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.
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 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.
What Happens to the Human Body in a Vacuum?
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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.
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.
Pluto Picture - Hemisphere of Pluto
Map constructed through computer image processing performed on Hubble Space Telescope data. Pluto is an unusually complex object, with more large scale contrast than any planet except Earth.
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?
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.
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
5 U.S. Vacation Spots to Learn About Astronomy
Introducing a story about places to visit if you're interested in astronomy and space.
Pluto: First Reconnaissance Complete!
The first summary of New Horizons' exploration of Pluto, Charon, and the other worlds of the Pluto system.
Constellations Pictures - Antlia - Picture of...
The Water Pump - Genitive: Antliae Abbreviations: Ant, Antl Right Ascension, (h): 10 Declination, (deg): 35S . Page 2.
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?
Constellations Pictures - Aquarius - Picture of...
The Water Carrier - Genitive: Aquarii Abbreviations: Aqr, Aqar Right Ascension, (h): 23 Declination, (deg): 15S . Page 4.
Blue Moon
Blue Moon. Once in a blue moon. You have probably heard this expression before. It usually means not very often. But, is there really such a thing as a blue moons? Well, yes, but it's probably not what you may think, and a blue moon is definitely not what it used to be.
Does the Moon Rotate?
Does the Moon rotate? This question often confuses people, so let's take a look at what the Moon does.
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.
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.
Supernovae
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.
10 Tricks to Using a Star Chart
A collection of tips on how to read a star chart.
Constellations Pictures - Apus - Picture of the...
The Crow - Genitive: Apodis Abbreviations: Aps, Apus Right Ascension, (h): 16 Declination, (deg): 75S . Page 3.
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.
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.
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.
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.
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.
The Final Frontier Just Got More Interesting
What would a spacecraft say if it could know what its future mission would be? New Horizons tells us its tale of future exploration.
Exploring the King of the Kuiper Belt
Pluto has an ice cap! Images from New Horizons uncover bright area on the dwarf planet's surface.
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!
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.
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.
Meet Mae Jemison: Doctor, Astronaut, Star Trek...
Dr. Mae Jemison was the first African-American female astronaut in Space. Read her brief biography.
The Teapot and the Scorpion Beckon!
Get started with stargazing this month with a look at Scorpius, one of the most recognizable constellations in the sky.
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.
Earth Pictures - Global Images of Earth
Global images of Earth from Galileo. In each frame, the continent of Antarctica is visible at the bottom of the globe. South America may be seen in the first frame (top left), the great Pacific Ocean in the second (bottom left), India at the top and Australia to the right in the third (top right), and Africa in the fourth (bottom right). Page 11.
Constellations Pictures - Aquila - Picture of...
The Eagle - Genitive: Aquilae Abbreviations: Aql, Aqil Right Ascension, (h): 20 Declination, (deg): 5N . Page 5.
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.
Earth Pictures - Earth - Full Disk View of Africa
This color image of the Earth was obtained by the Galileo spacecraft on Dec. 11, 1990, when the spacecraft was about 1.5 million miles from the Earth. The color composite used images taken through the red, green and violet filters. Africa stretches from the center to the top of the picture with the Arabian Peninsula off to its right. The white, sunlit continent of Antarctica is at the bottom. Page 24.
Earth Pictures - Earthrise Over Plaskett Crater
The above is a view from Clementine of the full Earth over the north pole of the Moon. The crater with a central peak in the foreground is Plaskett (820N, 1740E; 110 kilometers in diameter). On Earth, Africa is clearly visible and nearly cloud free. . Page 15.
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.
Black Holes Pictures
Formed when a massive star collapses from its own gravity, black holes have such a strong pull of gravity that not even light can escape from them. Today's scientists believe that a black hole is the end product in the lifecycle of a giant star. If this star is three or four times as massive as our own sun, even after it has exhausted all its fuel, then it can collapse under its own gravity.
Meet Our Little Pluto Ambassador
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.
Earth Pictures - World Globes, Shaded Relief...
These images of the world were generated with data from the Shuttle Radar Topography Mission (SRTM). The SRTM Project has recently released a new global data set called SRTM30, where the original one arcsecond of latitude and longitude resolution (about 30 meters, or 98 feet, at the equator) was reduced to 30 arcseconds (about 928 meters, or 1496 feet.). Page 29.
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.
L. Gordon Cooper Jr. Biography
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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.
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.
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.
Earth Pictures - Distant Earth and Moon
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, by NASAs Voyager 1 when it was 11.66 million km (7.25 million miles) 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 26.
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.
Dwarf Planets
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Earth Pictures - Earth and Moon as viewed by...
Mariner 10 was launched on November 3, 1973, 12:45 am PST, from Cape Canaveral on an Atlas/Centaur rocket (a reconditioned Intercontinental Ballistic Missile - ICBM). Within 12 hours of launch the twin cameras were turned on and several hundred pictures of both the Earth and the Moon were acquired over the following days. Page 20.
How Apollo 11 Put Humanity on the Moon
A short retrospective about the Apollo 11 mission and what it means for us 45 years later.
Earth Pictures - Earth and Moon as viewed from...
This is the first image of Earth ever taken from another planet that actually shows our home as a planetary disk. Because Earth and the Moon are closer to the Sun than Mars, they exhibit phases, just as the Moon, Venus, and Mercury do when viewed from Earth. As seen from Mars by MGS on 8 May 2003 at 13:00 GMT (6:00 AM PDT), Earth and the Moon appeared in the evening sky. Page 19.
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.
African-Americans in Astronomy and Space
Celebrating Black history Month, African-Americans have played a major role in the history of the United States of America and have much to be proud of. Here, we would like to celebrate just a few of the achievements of African-Americans in the fields of astronomy and space. This list is but a drop in the bucket and while it will continue to expand will never be complete. Discover some role models for Black History Month.
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.
Cosmic Objects Reveal All in UV Light
What is the ultraviolet universe like? This article teaches about ultraviolet light and astronomy.
What is Dark Matter
There is much that we do not know about the Universe, but one of the greatest mysteries surrounds a substance known as dark matter. By its very nature it is invisible to the naked eye, but is apparently all around us; everywhere we look in the night sky. But without it physicists would have a difficult time explaining the composition, motion and expansion of the universe. So what is Dark Matter?
Earth Pictures - Earth - India and Australia
This color image of the Earth was obtained by the Galileo spacecraft on Dec. 11, 1990, when the spacecraft was about 1.5 million miles from the Earth. The color composite used images taken through the red, green and violet filters. India is near the top of the picture, and Australia is to the right of center. The white, sunlit continent of Antarctica is below. Picturesque weather fronts are visible in the South Pacific, lower right. Page 23.
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.
Astronomy 101 - Astronomy History - Seeing Is...
Astronomy 101 - Astronomy History - Seeing Is Believing - Lesson 2: History - A Renaissance in Science
Earth Pictures - Atlantic Ocean Surface Winds...
This image shows wind speeds and direction in the Atlantic Ocean on August 1, 1999, gathered by the Seawinds radar instrument flying onboard the QuikScat satellite. - This image was released in conjunction with: PIA01346. Please refer to that image for more details about the Pacific region. - The intense surface winds of Typhoon Olga, represented by yellow spirals, can be seen moving around South Korea in the China Sea. Page 27.
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.
Earth Pictures - Earth - Departing Image by...
This color image of the Earth was taken by the Galileo spacecraft on December 11 as it departed on its 3-year flight to Jupiter, about 2 1/2 days after the second Earth flyby. The distance to Earth is about 1.9 million kilometers (1.2 million miles). Antarctica is visible at the bottom of the image, and dawn is rising over the Pacific Ocean. . Page 25.

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