Fragment G of Comet Shoemaker-Levy 9 collides with Jupiter. This picture was taken by the South Pole Infrared Explorer (SPIREX) at UTC 18 July 1994 at 7:41. This brilliant explosion remnant is vastly more powerful than any other impact we have seen at 2.36 microns so far. The planet is faint because the exposures were short to avoid saturating the detectors. These observations were performed by University of Chicago and Center for Astrophysical Research in Antarctica (CARA) Astrophysicists Mark Hereld, Hien Nguyen (at South Pole), Bernard J. Rauscher, and Scott A. Severson.