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Steven Squyres: The Mars Exploration Rover Mission

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The Mars Exploration Rovers Spirit and Opportunity have both found evidence for water-related processes at their landing sites. In Gusev crater, Spirit found only trace evidence for the action of water on the lava-covered plains of the crater floor. This water action left thin salt-rich deposits on the surfaces of rocks and in fractures within rocks, and what appear to be magnesium sulfate salt concentrations in soils. The older rocks in the Columbia Hills, however, show evidence for substantial alteration by water. At Meridiani Planum, Opportunity has found layered sedimentary rocks that are a mixture of fine-grained silicate particles and chemical sediments precipitated from liquid water....

Channel: Education
Uploaded: November 30, 1999 at 12:00 am
Author: ucberkeleyevents

Length: 07:05
Rating: 5.00
Views: 4418

Tags: educational  howto  ucberkeley  

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Video Comments

sirjulez2004 (November 30, 1999 at 12:00 am)
i wonder what compression he used for this video. an hour long and good quality.
sys738 (November 30, 1999 at 12:00 am)
excellent presentation!i took his class last semester and it was awesome.
conjcsisepuede (November 30, 1999 at 12:00 am)
nice and amazing!
jcstevens91 (November 30, 1999 at 12:00 am)
o i see i see
smartyjones2004 (November 30, 1999 at 12:00 am)
Excellent presentation by Dr. Squyres. It was very intriguing throughout the entire presentation. Thanks for posting the video CalTech.
davidchenard (November 30, 1999 at 12:00 am)
What about the unfrozen water in the surface soil? Any farmer or gardener can tell you soil compaction requires moisture. Since dry soil can not be compacted, the rover tracks clearly indicate there is moisture in the soil. This is not dry soil, and it is not permafrost. This is a clear indication of water. How can the temperature be below zero while the dark distintly compressed Rover tracks could only result from a high soil moisture content?
davidchenard (November 30, 1999 at 12:00 am)
Why name hills on Mars after the Columbia space shuttle? Has anything else been named after other space shuttles?
Starter61 (November 30, 1999 at 12:00 am)
Excellent presentation, thank you very much !
suhas1717 (November 30, 1999 at 12:00 am)
great, isn't it??
you2tube22 (November 30, 1999 at 12:00 am)
Forza MER!

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