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    Nasa find water on Mars?


    <t></t><table border="0" cellpadding="0" cellspacing="0" width="546"><t><tr><td valign="top" width="516"><t></t><table border="0" cellpadding="0" cellspacing="0" width="516"><t><tr><td align="left" width="400">@@@@SPAN>NASA Website

    NASA Images Suggest Water Still Flows in Brief Spurts on Mars@@@@/SPAN>

    <!- Title ends -></td><td align="right" width="116">@@@@SPAN>
    12.06.06
    @@@@/SPAN>

    </td></tr><tr><td colspan="2"><!- starts ->
    <t></t>NASA photographs have revealed bright new deposits seen in two gullies
    on Mars that suggest water carried sediment through them sometime
    during the past seven years.


    "These observations give the strongest evidence to date that water
    still flows occasionally on the surface of Mars," said Michael Meyer,
    lead scientist for NASA's Mars Exploration Program, Washington.


    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 provided the new
    evidence of the deposits in images taken in 2004 and 2005.


    "The shapes of these deposits are what you would expect to see if the
    material were carried by flowing water," said Michael Malin of Malin
    Space Science Systems, San Diego. "They have finger-like branches at
    the downhill end and easily diverted around small obstacles." Malin is
    principal investigator for the camera and lead author of a report about
    the findings published in the journal Science.


    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 or yards long. @@@@SPAN>@@@@/SPAN>


    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.


    Mars Global Surveyor has discovered tens of thousands of gullies on
    slopes inside craters and other depressions on Mars. Most gullies are
    at latitudes of 30 degrees or higher. Malin and his team first reported
    the discovery of the gullies in 2000. To look for changes that might
    indicate present-day flow of water, his camera team repeatedly imaged
    hundreds of the sites. One pair of images showed a gully that appeared
    after mid-2002. That site was on a sand dune, and the gully-cutting
    process was interpreted as a dry flow of sand.

    @@@@SPAN>@@@@/SPAN>


    Today's announcement is 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.


    "These fresh deposits suggest that at some places and times on
    present-day Mars, liquid water is emerging from beneath the ground and
    briefly flowing down the slopes. This possibility raises questions
    about how the water would stay melted below ground, how widespread it
    might be, and whether there's a below-ground wet habitat conducive to
    life. Future mis
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    #2
    pictures not appearing properly in article:





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      #3
      Hmmm, NASA are loking for funding to build on the moon. Suddenly they find water on Mars. Now were did I read that before?
      Excellence is hard to keep quite - Sherrie Coale

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        #4
        how do they know its water?<!-
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          #5


          Sorry, couldn't resist!


          Romani ite Domun

          Comment


            #6
            Paddie that is woeful [img]smileys/lol.gif[/img]
            Computer games don't affect kids, I mean if Pac Man affected us as kids, we'd all be running around in darkened rooms, munching pills and listening to repetitive music.

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              #7
              Someone had to post it! [img]smileys/wink.gif[/img]
              Romani ite Domun

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                #8
                [img]smileys/lol.gif[/img]I knew somebody would post that.
                <a href=\"http://www.xboxlc.com/profile/Ruck_You\" target=\"_blank\">
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                If you’re fat stay in the ruck - Liam Toland

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                  #9
                  [img]smileys/lol.gif[/img]Way to go Paddie
                  Excellence is hard to keep quite - Sherrie Coale

                  Comment


                    #10
                    they need water on the moon before they can realistically start heading to mars. unless they find an effective way of storing hydrogen and oxygen in tanks in enogh quantity for a proper settlement
                    "Some people don't know their easy lives... I wouldn't be so ungrateful" - Fiacre Ryan - #AutismAndMe

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                      #11


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                      i was full sure that Paddie's post would be the first one
                      The Source for this post is The Internet
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                        #12
                        There does seem to have a lot of space news around in the last week, which could be a coincidence or as mccloud suggests a little more suspicious. Either way i say give the boffins all the money they need, this planet has had it and it will soon be time to say goodbye.

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                          #13
                          My, my, blackadder, aren't we full of the joys of life today...[img]smileys/shock.gif[/img][img]smileys/lol.gif[/img] Presume you have booked your place on the shuttle..
                          The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man - George Bernard Shaw


                          Comment


                            #14
                            What is the ambient temperature range on Mars?

                            Comment


                              #15
                              Of course there's water on Mars. We're exporting it from West Cork at present due to a recent surplus (not budget related)

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