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Nature 394, 221-223 (16 July 1998) | doi:10.1038/28271

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Planetary impacts:  Craters unchained

H. J. Melosh1

Ever since the appearance of those beautiful 'string of pearls' images, created by the break up of comet Shoemaker-Levy 9 in July 1994, planetary geologists have been excitedly looking for chains of impact craters caused by similar events. A good case can indeed be made that the lines of craters called 'catenae' on the Jovian satellites Ganymede and Callisto were created by the impact of other tidally split comets1.

  1. H. J. Melosh is in the Lunar and Planetary Laboratory, University of Arizona, Tucson, Arizona 85721, USA.
    e-mail: Email: jmelosh@lpl.arizona.edu