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NASA: Flowing Water On Mars

  • -Marduk-
  • uploaded: Dec 4, 2008
  • Hits: 4897

Description:

MGS Images Suggest Water Still Flows in Brief Spurts on Mars

Bright new deposits seen in two gullies on Mars suggest water carried sediment through them sometime during the past seven years.

Liquid water, as opposed to the water ice and water vapor known to exist at Mars, is considered necessary for life. The new findings heighten intrigue about the potential for microbial life on Mars. The Mars Orbiter Camera on NASA\'s Mars Global Surveyor provide the new evidence of the deposits in images taken in 2004 and 2005.

The atmosphere of Mars is so thin and the temperature so cold that liquid water cannot
persist at the surface. It would rapidly evaporate or freeze. Researchers propose that
water could remain liquid long enough, after breaking out from an underground source, to carry debris downslope before totally freezing. The two fresh deposits are each several hundred meters long.

The light tone of the deposits could be from surface frost continuously replenished by ice within the body of the deposit. Another possibility is a salty crust, which would be a sign of water\'s effects in concentrating the salts. If the deposits had resulted from dry dust slipping down the slope, they would likely be dark, based on the dark tones of dust freshly disturbed by rover tracks, dust devils and fresh craters on Mars.

The images are the first to reveal newly deposited material apparently carried by fluids after earlier imaging of the same gullies. The two sites are inside craters in the Terra Sirenum and the Centauri Montes regions of southern Mars.



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5 comments

  • Fredje#

    Fredje November 8, 2009 8:51:00 PM CET

    Already on Mars service temperatures were measured of 27 C (81 F), so liquid water could very wel be possible. Also the Spirit and Opportunity have opened up the Martian soil with their wheels and have both shown "clay" beneath some duty soil..........

  • Tomma#

    Tomma August 9, 2009 8:15:56 AM CEST

    Sorry! That's for up Marduk.

  • Tomma#

    Tomma August 9, 2009 8:14:18 AM CEST

    Where do you get your info from Drewdatt I need evidence first. I just hope nasa isn't withholding information from us lol

  • -Marduk-#

    -Marduk- January 6, 2009 11:51:02 PM CET

    True, Drewdatt

  • Drewdatt#

    Drewdatt January 6, 2009 8:38:22 PM CET

    First I said they would tell us there is ice / snow.Then I said they would tell us there is waterThen atmosphere to support minor plant lifeThen fossils, then life, then remnants of ancient civilization. Mark my words, Mars was habitable in the past, was covered with life and intelligent life as well, just like earth.



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