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This is a Hubble Space Telescope image of comet Shoemaker-Levy 9, taken on May 17, 1994,
the comet already on its collision course with Jupiter.
In this picture, the 21 fragments of Shoemaker-Levy 9 stretched across 1 million kilometers in space.
Image Credit: H.A. Weaver, T. E. Smith (Space Telescope Science Institute), and NASA
Ultraviolet picture of Jupiter taken by the Hubble Space Telescope.
This picture shows Jupiter's after many impacts by fragments of comet Shoemaker-Levy 9.

Credit: Hubble Space Telescope Comet Team
The Keck Observatory took this infrared image of the fireball that resulted from fragment G's collision with Jupiter.
This picture was taken on July 18, 1994.
Picture of the impact of Fragment K of Comet Shoemaker-Levy 9 on Jupiter. The scars of three previous impacts can be seen on Jupiter.
Image credit: Peter McGregor and Mark Allen, ANU 2.3m telescope.
Instrument: CASPIR at 2.34 microns. Color image Mt. Stromlo Observatories.