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Post-impact fireball of fragment K of Comet Shoemaker-Levy. Image from ANU 2.3m telescope on July 19, 1994 at UT 10:57. Color coding: 3.40 microns (B), 3.60 microns (G), 4.00 microns (R).
Images from Peter McGregor and Mark Allen. Courtesy of Mt. Stromlo Observatory.