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Steven Squyres: The Mars Exploration Rover Mission

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Uploaded by on Aug 21, 2007

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....

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  • This is the truth.... 

  • lies

    

  • It is amazing project, and the unexpected lifecycle of the rovers gives huge credit to all the scientists and engineers working on this project, the whole team and humanity. Brilliant.

    It feels like an age of exploration is just around the corner, my spirit rising at this thought.

    Humanity sits on the perch almost ready to fly, to see, to touch, to experience and understand explore all those things and places around us, but we are stuck in old fears, unfinished quarrels and ROI calculations.

  • Great Stuff, 1 thing:

    There are evidences backed by empirical tests in laboratories that prove stratification in sedimentary rock formations in flowing water environments occurs simultaneously, thus each observed strata in the formation can not be used separately to define the age of the formation as sum of estimated times it takes for individual strata to form as solid rock layer. Then in B/W scenario time is measured in length of formation and not height of and numbers of layers.

    Walther's law

  • fascinating.

  • Clearly evident is the dedicated, focused passion of a skilled remarkable team.

  • awesome lecture! thank you for uploading this video! I have liked it!

  • Great Lecture! Thanks A LOT for the upload! I really enjoyed it! I LOVE ASTRONOMY! I ALWAYS HAVE! Mars is a very beautiful and mysterious planet, and I hope we set foot on the Red Planet soon! =)

  • call it good

  • @jmyjms86 we get closer to the sun every year do to gravity , the universe is expanding not the solar system.

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