Wet Past of Jupiter's Largest Moon.(Ganymede)(Brief Article)

Publication: USA Today (Magazine)

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COPYRIGHT 2001 Society for the Advancement of Education

Bright, flat terrain in long swaths on the surface of Jupiter's icy moon Ganymede may testify that water or slush emerged there about a billion years ago, say planetary scientists who have combined stereo images from NASA's Galileo and Voyager missions to examine provocative features on that moon. This bright terrain, long since frozen over, lies uniformly in troughs about one kilometer (a little over a half-mile) lower than Ganymede's...

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