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APOD: 2011 December 12 An Unusual Vein of Deposited Rock on Mars
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APOD: 2011 December 12  An Unusual Vein of Deposited Rock on Mars
Credit & Copyright: Mars Exploration Rover Mission, NASA, JPL, Cornell; Image Processing: Kenneth Kremer, Marco Di Lorenzo
Explanation: What could create this unusual vein of rock on Mars? A leading hypothesis is that this thin rock layer dubbed "Homestake" was deposited by a running liquid -- like most mineral veins are here on Earth. And the running liquid of choice is water. Therefore, this mineral streak -- rich in calcium and sulfur -- is the latest in the growing body of evidence that part of Mars had a watery past. This, in turn, increases the speculation that Mars was once hospitable to life. Pictured above is a vista taken near the western rim of Endeavour Crater by the Opportunity rover currently exploring Mars. The inset image shows a close up of the recently discovered mineral vein.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Russkii tekst
Based on Astronomy Picture Of the Day
Publikacii s klyuchevymi slovami: Mars - Mars - voda na Marse
Publikacii so slovami: Mars - Mars - voda na Marse
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