Space exploration is a broad topic covering many facets of deep-space and planetary science. Learn about space probes, Mars Rovers, SETI and other out-of-this-world subjects.
Thousands of satellites fly overhead every day, helping us with things like weather forecasts, scientific research, communications, and TV broadcasts. Learn how satellites work and how they get into orbit. See more »
Teenagers everywhere can thank NASA for inventing the material that makes those invisible braces invisible. We can also thank the space administration for athletic shoes, scratch-resistant lens and cordless vacuums.
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If you take cosmic dust and add plasma ... do you get life? Findings suggest that plasma crystals may be the key to one of the universe's greatest mysteries: Is there life out there?
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In science fiction, explorers often investigate Earthlike planets. In reality, such perfect, life-giving worlds are rare. But scientists may have found one.
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Since its launch in 1990, the Hubble Space Telescope has ranked as one of man's greatest achievements in space or otherwise. What does the future hold for the great observatory, and will its space telescope successor measure up to Hubble?
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People around the world watched as Neil Armstrong touched the moon and declared, "That's one small step for man; one giant leap for mankind." But how did we put a man on the moon?
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NASA's next generation of telescopes will collect 1,736 times more light than the Hubble and will penetrate the depths of the universe to see objects nearly as old as the Big Bang.
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Mars Odyssey is NASA's latest Mars spacecraft, and it's going to the red planet in search of water. Learn how this orbiter could pave the way for manned missions to Mars!
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We've discovered numerous planets orbiting other stars in our galaxy, but how and why? Find out how planet hunting works.
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Thousands of satellites fly overhead every day, helping us with things like weather forecasts, scientific research, communications, and TV broadcasts. Learn how satellites work and how they get into orbit.
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SETI is the Search for Extraterrestrial Intelligence, and it's dedicated to discovering signals sent to Earth from far, far away. Find out what would happen if an extraterrestrial were to make contact.
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If the Earth is struck by calamity, will survivors find salvation in the proposed Doomsday Ark? The lunar-based vault will contain information that could help jumpstart a new civilization.
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The second Mars Exploration mission rover, Opportunity, has successfully landed and is now sending back breathtaking photos. See what these high-tech rovers are all about.
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The Voyager space probes took dazzling pictures of planets no one had ever seen. And they're still on the move, carrying golden records with a message for aliens -- complete with bagpipes and Louis Armstrong.
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Explore the historic space voyages, technology and people that have shaped 50 years of NASA.
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Scientists might be able to create a universe in a laboratory. How is this possible?
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Warning: It might be hard to comprehend the amount of money we're discussing here. Space stations and missions to Mars don't come cheap, of course, and thinking about the cost can cause you to lose all sense of perspective.
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Although most people today will never set foot on the moon, it's likely you come into contact with a NASA byproduct every day.
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Since its inception in the late '50s, NASA has accomplished some amazing technical feats. But what are some of the administration's greatest moments?
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The events in the "Star Wars" trilogy (times two) take place in a galaxy far, far away -- that much is obvious. But it takes a whole lot of planets, moons and asteroids to make a galaxy.
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Because an Earth-like environment is created within a spacesuit, it allows you to walk around in space in relative safety. But outer space is an extremely hostile place and could kill you if you aren't protected.
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