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NASA Plans Close-Ups of Mercury and a Comet

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Science  16 Jul 1999:
Vol. 285, Issue 5426, pp. 312
DOI: 10.1126/science.285.5426.312a

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Summary

NASA last week selected two spectacular shows as part of its Discovery program of quick and cheap space missions. In 2008 and 2009, a spacecraft will scrutinize Mercury, and in 2005, another mission will shoot a massive copper cannonball into a comet to learn more about its innards. The scheduled date for the cometary fireworks, which space enthusiasts can watch from Earth: 4 July.