
Destination: Missing--Comet Once Targeted by NASA Mission Vanished
Little-known Comet 85P/Boethin, chosen as the destination for an extended mission of NASA's Deep Impact spacecraft, disappeared sometime after 1986
John Matson is a former reporter and editor for Scientific American who has written extensively about astronomy and physics.

Destination: Missing--Comet Once Targeted by NASA Mission Vanished
Little-known Comet 85P/Boethin, chosen as the destination for an extended mission of NASA's Deep Impact spacecraft, disappeared sometime after 1986

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