The West Valley Route |
The West Valley Route |
Mar 18 2009, 12:00 PM
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#1
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Senior Member Group: Moderator Posts: 4279 Joined: 19-April 05 From: .br at .es Member No.: 253 |
Here're the latest navcam pictures taken during sol 1850: http://nasa.exploratorium.edu/mars/spirit/navcam/2009-03-18/
Spirit is no longer stuck, but I think the attempt to go on top of HP via the NE path is finished and we are going to the West Valley. A pancam mosaic of the western route is planned for tosol. |
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Apr 30 2009, 02:35 PM
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#2
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Member Group: Members Posts: 293 Joined: 22-September 08 From: Spain Member No.: 4350 |
The silica sand so close to the surface already tells that the rate of removal has been greater than the rate of deposition. It's a bit amazing that there isn't actually any patch exposed.
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May 1 2009, 03:09 AM
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#3
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Newbie Group: Members Posts: 4 Joined: 9-April 09 From: Corvallis, Oregon Member No.: 4723 |
The silica sand so close to the surface already tells that the rate of removal has been greater than the rate of deposition. It's a bit amazing that there isn't actually any patch exposed. Or perhaps Mars' high UV flux quickly discolours (colours?!) the white material when it becomes exposed at the surface. |
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May 1 2009, 03:23 AM
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#4
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Senior Member Group: Members Posts: 2173 Joined: 28-December 04 From: Florida, USA Member No.: 132 |
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May 1 2009, 11:57 AM
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#5
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Member Group: Members Posts: 198 Joined: 2-March 05 From: Richmond, VA USA Member No.: 181 |
There is no question of discoloration. They are different materials -- and not because of UV flux. Hi Centsworth, I think Stephen was trying to say not that the various hues in the lighter toned materials were due to UV exposure, but rather that prolonged UV exposure possibly 'degraded' the lighter toned material into one that was at least less visually obvious (darker and closer to the local surface soil color). I might be wrong in my reading of Stephen's question. If so, it is at least a question I had wondered myself. I had held off posting for now as I had not done the forum research that I thought worthy before asking -- my memory seems to recall a discussion on this very question a few years ago, possibly when spirit was somewhere between LRH and returning to the eastern side of HP. So, with more words written than intended, I'll be quiet and sniff around some more before I hopefully post again. -- Pertinax |
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May 1 2009, 12:37 PM
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#6
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Member Group: Members Posts: 813 Joined: 8-February 04 From: Arabia Terra Member No.: 12 |
Trying a new tactic?
sol 1892 sol 1893 |
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