Rotating comet

Rotating comet

. This photograph of Comet Halley shows jets of dust ejected from a rotating nucleus. Stephen Larson and David Levy took the image on 6 January 1986 with the 1.5-meter (61-inch) Catalina reflector on Mount Lemon. They used a CCD camera and a red filter to enhance the dust component of Halley’s light. (Courtesy of Stephen Larson, Lunar and Planetary Laboratory, University of Arizona.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University