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NASA, Microsoft take Web surfers to Mars
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NASA chief ready to work with China on space exploration
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NASA launches space shuttle Atlantis
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Space shuttle Atlantis set for launch
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NASA finds water on the moon
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Moon holds key to solar system's secrets
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NASA finds water found on the moon
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Europe's comet chaser makes last call home
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On 10-year mission, Europe's comet chaser set for last flyby
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NASA rocket launch advances Moon mission dream
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