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Astronauts Begin 9-Day Mission ... Under the Sea -
Tropical Storm Arthur's Threat Seen From Space (Photo)Tropical Storm Arthur appears menacing as it bears down on the coast of Florida, in this photo captured today (July 2) by astronauts aboard the International Space Station.
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How Robots Are Blazing a Trail for Manned Mars Missions -
The Truth About Neil Armstrong (Op-Ed)Opinion Neil Armstrong was more than a hero — he was a down-to-earth, deeply complex, brilliant, three-dimensional human being.
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Long Space Missions Can Give Astronauts Blurry Vision, Study FindsSome astronauts reported blurred vision that lasted months after their return to Earth.
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Space Medicines for Astronauts Don't Have the Right StuffMedications used to treat astronauts in zero gravity might not work as well as they do on Earth.
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Spaceflight May Compromise Immune System, Study Finds
A long journey in space may actually compromise the immune system and make astronauts more susceptible disease.
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NASA Moon Probe Sheds Light on Space Radiation RisksNew findings from a NASA moon probe could lead to safer, more efficient spacecraft.
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Obama Seeks $17.7 Billion for NASA to Lasso Asteroid, Explore SpaceNASA's 2014 budget request includes $105 million to kick-start the agency's asteroid capture mission.
