Mars once covered in water

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fred8615
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Joined: October 12th, 2009, 12:29 pm
Location: Sorrento, LA

Mars once covered in water

Post by fred8615 » June 25th, 2010, 12:32 pm

We've known for some time there was water on Mars, this seems to indicate how much:

http://news.blogs.cnn.com/2010/06/25/ma ... ency-says/
Frederick J. Barnett
"Someone's got to take the responsibility if the job's going to get done!! Do you think that's easy?!" Gregory Peck - The Guns Of Navarone

Christopher K.
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Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: Mars once covered in water

Post by Christopher K. » August 8th, 2010, 10:30 am

This is the point at which scientists are really prepared to firmly theorize that the time of Martian history that saw "wetness" saw wetness on a global scale. The University of Paris' John Carter states, "We can now say that the planet was altered on a global scale by liquid water about four billion years ago."

The theory is that a giant impactor slammed into the Martian northern hemisphere, and the formation of water-related substances occurred between then and the newer sediments forming a mantle.

The Mars Reconaissance Orbiter uses a spectrometer (CRISM) that splits infrared into its constituent wavelengths to identify various minerals.

More information at:
http://www.nasa.gov/mission_pages/MRO/n ... 00624.html

Christopher K.
Posts: 4376
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: Mars once covered in water

Post by Christopher K. » May 14th, 2018, 9:11 am

There was a lake present in Gale Crater 3.5 billion years ago. Cracks in a rock nicknamed Old Soaker have helped determine the lake's water level fluctuated. We are still trying to determine whether the loss of Mars' magnetic field doomed its water.

More information:
http://www.skyandtelescope.com/astronom ... s-history/

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