News of the WeekPlanetary Science

Minerals Suggest Water Once Flowed on Mars--But Where?

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Science  03 Oct 2008:
Vol. 322, Issue 5898, pp. 32
DOI: 10.1126/science.322.5898.32a

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Scientists on the Phoenix mission to the high arctic of Mars announced this week that the rover had found some long-sought soil minerals that are "indicators of liquid water in the past." The catch is that team members can't say for certain when or where the water was liquid.