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Why Is Pluto No Longer Considered a Planet?
science.howstuffworks.com/pluto-planet.htm
On Aug. 24, 2006, the International Astronomical Union (IAU), an organization of professional astronomers, passed two resolutions that collectively revoked Pluto's planetary status.
The Tallest Mountain in the Solar System Is Much Higher Than Everest
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Many people dream of climbing Mount Everest, but what if you could scale the highest mountain in the solar system? That one is more than twice as tall as Everest!
For the Benefit of All: The NASA Quiz
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The National Aeronautics and Space Administration has been exploring space for more than 50 years. How much do you know about the scientists, engineers, pilots and machines that carried America into space?
Can You Get More Than 11 Right on This Astronomy Quiz?
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Does the solar system fill you with wonder? Are you an amateur stargazer fascinated by celestial bodies? Show off your knowledge of the universe with an out-of-this-world astronomy quiz!
Second to None: Here's the Buzz on Buzz Aldrin
history.howstuffworks.com/historical-figures/buzz-aldrin.htm
Buzz Aldrin was the second man on the moon, as well as a math whiz, scuba enthusiast and inspiration for Buzz Lightyear. How cool is all that?
How the International Space Station Works
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In 1984, President Ronald Reagan had a vision for a permanently inhabited space station. Today that vision is a reality we know as the International Space Station.
The Ultimate Astronomy Quiz
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Though the astronomy field has evolved from its primitive beginnings, there's still a boundless cosmos to explore. Test your astronomy knowledge with our quiz.
10 Crackpot Theories About Space
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Our knowledge of space changes all the time as new discoveries are made. But some ideas about the universe have never really held water - including the one that everything is made of frozen H2O.
10 Greenhouses Around the World
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Greenhouses around the world great the ideal growing solution anywhere. Check out these top 10 greenhouses around the world.
Top 10 Space Conspiracy Theories
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Space conspiracy theories feature hoaxes, government cover-ups and intelligent aliens. Check out our list of the top 10 space conspiracy theories.