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In 2005, NASA's Deep Impact mission fired a 370 kg (816 lb) impactor into its nucleus. NASA's Stardust-NExT spacecraft will flyby five years later to inspect the comet's surface. | NASA
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NASA Plans Valentine's Date With a Comet

NASA is planning a Valentine's date with a comet. Learn the plan for NASA's Valentine's date between the Stardust-NExT spacecraft and the comet Tempel 1.

January 20, 2011
3:00 AM EST

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