Click on image for full size
Courtesy of H.A. Weaver, T.E. Smith (Space Telescope Science Institute) and J.T. Trauger, R.W. Evans (Jet Propulsion Laboratory), and NASA/NSSDC
The crash of a comet into a planet is very unusual. The crash of comet Shoemaker-Levy 9 into Jupiter, which happened in 1993, might happen once in a thousand years!
This is page 4 of 10