Nicholas Mastrodemos

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Deep Impact collided with comet Tempel 1, excavating a crater controlled by gravity. The comet's outer layer is composed of 1- to 100-micrometer fine particles with negligible strength (<65 pascals). Local gravitational field and average nucleus density (600 kilograms per cubic meter) are estimated from ejecta fallback. Initial ejecta were hot (>1000(More)
Michael J.S. Belton a,⇑, Karen J. Meech , Steven Chesley , Jana Pittichová , Brian Carcich , Michal Drahus , Alan Harris , Stephen Gillam , Joseph Veverka , Nicholas Mastrodemos , William Owen , Michael F. A’Hearn , S. Bagnulo , J. Bai , L. Barrera , Fabienne Bastien , James M. Bauer , J. Bedient , B.C. Bhatt , Hermann Boehnhardt, N. Brosch , Marc Buie ,(More) version of this article at: including high-resolution figures, can be found in the online Updated information and services, can be found at: Supporting Online Material found at: can be related to this article A list of selected additional articles(More)
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