In collaboration with Kevin Zahnle of NASA Ames Research Center, Mordecai-Mark Mac Low of the University of Chicago used the CRAY C90 at Pittsburgh Supercomputing Center to run a series of simulations of the comet Shoemaker-Levy 9 impact with Jupiter, July 1994. He used ZEUS, a program developed at the Laboratory for Computational Astrophysics of the National Center for Supercomputing Applications, to model the gas dynamics of the shock waves and explosion that occurred when the comet crashed into Jupiter's atmosphere.

select the image below to see an artist's impression of
the Shoemaker-Levy 9 Impact with Jupiter (mpeg - 1.5meg)
produced by the PSC's Sci-Vis Group :

animation by G.Foss, PSC

Select the image below to see a visualization of
the Comet Entering Jupiter's Atmosphere (mpeg - 2meg)
from Mordecai-Mark Mac Low's simulation

animation by M.Mac Low, UChicago