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- This unnamed crater chain is one of the longest of 12 or so such chains on
- Callisto, one of Jupiter's 4 planet-sized satellites. It is 360
- kilometers long and the largest individual crater is approximately 24
- kilometers across. Jay Melosh and Paul Schenk, reporting in the October 21,
- 1993, issue of Nature, propose that these and similar mysterious crater
- chains on Ganymede and Callisto probably formed from the past impact of
- comets tidally disrupted during close passage of Jupiter, similar to
- comet Shoemaker-Levy 9 which will strike Jupiter in July, 1994. They
- conclude that tidal splitting of comets is relatively common and can occur
- roughly once per century.
-
- photo credit: Paul Schenk/Lunar & Planetary Institute
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- Lunar & Planetary Institute
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