Deep Impact: Excavating Comet Tempel 1
Top Cited Papers
- 14 October 2005
- journal article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 310 (5746) , 258-264
- https://doi.org/10.1126/science.1118923
Abstract
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 (1000 kelvins). A large increase in organic material occurred during and after the event, with smaller changes in carbon dioxide relative to water. On approach, the spacecraft observed frequent natural outbursts, a mean radius of 3.0 ± 0.1 kilometers, smooth and rough terrain, scarps, and impact craters. A thermal map indicates a surface in equilibrium with sunlight.Keywords
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