Steven Squyres: The Mars Exploration Rover Mission

Video Title :	Steven Squyres: The Mars Exploration Rover Mission
Description :	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....
Views :	3466
Rating :	5.00
Keywords, Tags :	ucberkeley educational howto
Video Length :	67 : 4

Comments :

nice and amazing!

o i see i see

Excellent presentation by Dr. Squyres. It was very intriguing throughout the entire presentation. Thanks for posting the video CalTech.

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?

Why name hills on Mars after the Columbia space shuttle? Has anything else been named after other space shuttles?

Excellent presentation, thank you very much !

great, isn't it??

Forza MER!