News & CommentPlanetary Science

Rocky Mix Suggests Wet Early Mars

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Science  17 Oct 1997:
Vol. 278, Issue 5337, pp. 380
DOI: 10.1126/science.278.5337.380b

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Last week, closeup images of surface rocks taken by the Mars Pathfinder rover provided independent evidence for a benign--and possibly life-supporting--early climate. Those images revealed pebbles on the martian surface that could have been rounded by tumbling in flowing water along with what appear to be conglomerates, rocks made of sand and water-worn pebbles. If the interpretations hold up, they would argue for a sustained period of warm, wet climate early in martian history, Pathfinder team members told a press conference.