Destination: Missing--Comet Once Targeted by NASA Mission Vanished: Scientific American - 0 views
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n 2005, after NASA's Deep Impact spacecraft had completed its objective of slamming an impactor probe into the nucleus of Comet Tempel 1, mission scientists began plotting their next move.
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spacecraft that had released the probe and documented its cometary collision was intact, with fuel to spare, leaving it well equipped to rendezvous with another comet in the inner solar system
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Comets preserve some of the primordial materials from the early solar system
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