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Comet C/2012 S1(ISON) could become the brightest comet anyone alive has ever seen
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A special adaptation allows the tiny animal known as the tardigrade to curl up into a dry, lifeless ball and survive for decades
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Rovers that ride winds on Venus, robots that roll like tumbleweeds and other wild ideas for exploring space
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New telescopes are allowing us to look at space more accurately than ever – and what they uncover could change our world
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Of the hundreds of exoplanets discovered by scientists, we list of some of the most interesting
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NASA has produced an app that helps scientists and amateurs alike keep track of time on the Red Planet
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The mobile laboratory will learn about the red planet's climate and geology, hoping to determine whether it once could have supported life
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Discovery of a fifth moon circling Pluto has some questioning where the "dwarf planet" category still applies to this faraway member of the Solar System
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Looking closely at a pair of meteorites originating from Mars, researchers now believe the planet likely holds vast reservoirs of water deep underground
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NASA wouldn't opt to expose astronauts to a 19 percent increased risk of cancer, but there's no telling what a reality TV show would do
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The Hubble Space Telescope shows that we're on a collision course with the nearby Andromeda galaxy—and set to crash in about 4 billion years
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If you didn't have a chance to see yesterday's astronomical event, watch this NASA video to see what all the fuss is about
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A few quick tips to keep in mind as you take advantage of the last chance to see Venus pass in front of the sun
The transit of Venus is so rare that only 8 transits have occurred since the invention of the telescope
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Venus' next transit of the sun isn't until 2117—so read about what to watch for and make sure to look to the skies
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For the first time in 18 years, a solar eclipse will be visible in the continental United States
The renowned physicist enjoyed the sensation of weightlessness while 24,000 feet over the Atlantic
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What are those burning questions about the cosmos that still baffle astronomers today?
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On Star Wars day, we take a look at the science behind the series' most popular spacecraft and the force fields it flies through
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The moon's closest approach to earth will coincide with a perfectly full moon
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