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How Satellites Work
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Thousands of satellites fly overhead every day, helping us with things like weather forecasts, scientific research, communications, TV broadcasts (and maybe some surreptitious spying). How much do you know about these eyes in the sky?
Twinkle, Twinkle: The Ultimate Stars Quiz
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Stars are giant nuclear fusion reactors, and we wouldn't exist without them. Find out how much you know about these twinkling lights with our quiz.
Something Produced a Surprising Spike of Methane on Mars
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Of all the discoveries made on Mars, the detection of methane blowing in the air is probably the most compelling. HowStuffWorks investigates the Mars methane mystery.
Do You Know More About Physics Than a 5th Grader?
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Hey there smarty-pants! It's time to put your science skills to the test with the ultimate quiz, to find out if you're smarter than a fifth grader in physics!
Where Is the Hubble Telescope and How Does It Work?
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The Hubble Space Telescope is one of the most amazing machines in orbit right now. Learn more about the Hubble Space Telescope and how it works.
Why is water vital to life?
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We know water is vital to life on Earth, but have you ever wondered why? Find out why water is vital to life on Earth in this article.
10 Best Ideas for Interplanetary Communication
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In the future, as we send space probes and manned missions to explore the solar system and possibly colonize other worlds, there's a major problem that we'll have to overcome -- keeping in touch with them.
10 Space Landmarks We'd Like to Visit
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Fling away your Fodor's! Toss your TripAdvisor! We have the only guided tour of outer space you'll need -- a foray into the final frontier so ambitious it will make the Voyager probes' Grand Tours look like daytrips.
How Lunar Eclipses Work
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A lunar eclipse occurs when a full moon passes within Earth's shadow. Learn what causes a lunar eclipse and the different types of lunar eclipse.
How NASA Works
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When most people think of NASA, they probably think of astronauts and the Kennedy Space Center. But there's a whole lot more to this 60-year-old organization.