Impact with nucleus of comet Tempel 1

Impact with nucleus of comet Tempel 1

Fig. 14.18 . The initial material ejected when the Deep Impact probe collided with the nucleus of comet Tempel 1 on 4 July 2005. The probe collided with the dark, cratered nucleus on its sunlight side. The nucleus is about 5 kilometers in diameter. Spectroscopic examination of the ejected material showed that the comet nucleus is mainly composed of water ice and dust. (Courtesy of NASA/JPL-Caltech/UMD.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University