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Deep Impact Finds a Flying Snowbank of a Comet

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Science  09 Sep 2005:
Vol. 309, Issue 5741, pp. 1667
DOI: 10.1126/science.309.5741.1667

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Blasting a comet for science's sake turns out to be harder than expected, but targeting Tempel 1 has revealed a fragile body that's already been through geologic turmoil. The Deep Impact team members report online in Science this week (see,, and that the impact blew out so much unexpectedly fine powder that they still haven't seen the crater through all the dust.