Re: Nasa has revealed Mars water secrets...< -- AMIGA Astronomy

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Subject: Re: Nasa has revealed Mars water secrets...<

Author:
Blobrana

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Date Posted: 00:43:58 03/06/04 Sat
In reply to: Blobrana 's message, "Nasa is to reveal Mars water secrets...<" on 00:16:26 03/02/04 Tue

The Spirit rover has also found more evidence that water once existed on Mars, following close behind Opportunity that sits in a region that was soaked by water in the distant past.
Spirit made its find by studying Humphrey, a 23-inch (60-centimenter) tall rock at Gusev Crater. The rover found that despite the rock's volcanic beginnings, water apparently seeped through it at one time, allowing minerals to crystallize inside.
Extensive studies of Humphrey with the multiple science tools on its robotic arm, which included drilling into Humphrey with the rock abrasion tool (RAT) then taking images of the area with the microscopic imager, Spirit detected fractures in the rock filled with minerals that were most likely formed in the presence of a tiny amount of water.

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