Mars's Watery Mysteries | December 1, 2008 Issue - Vol. 86 Issue 48 | Chemical & Engineering News
 
 
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Volume 86 Issue 48 | pp. 59-61
Issue Date: December 1, 2008

Mars's Watery Mysteries

Debate over history of water on the red planet intensifies with new spacecraft data
Department: Science & Technology

EVIDENCE IS ABUNDANT that water once flowed on Mars, from widespread deep trenches and gullies carved by great outpourings to the water-linked sediments and minerals impregnating the planet's surface.

In fact, there still is a large quantity of water on Mars. It's there in the polar ice caps and in a planetary blanket of permafrost. And as scientists have just discovered, it's also present in the form of dust-covered glaciers at Mars's mid-latitudes.

But the . . .

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