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gipul.txt
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1996-01-19
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Gipul Catena is the longest of 12 or so such chains on Callisto, one of
Jupiter's 4 planet-sized satellites. It is 620 kilometers long and the
largest individual crater is approximately 40 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
Lunar & Planetary Institute
3600 Bay Area Blvd.
Houston, TX 77058