NASA Images Suggest Water Still Flows on Mars |
NASA Images Suggest Water Still Flows on Mars |
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Dec 4 2006, 09:25 PM
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Guests |
Dec. 4, 2006
Dwayne Brown/Erica Hupp Headquarters, Washington 202-358-1726/1237 Guy Webster Jet Propulsion Laboratory, Pasadena, Calif. 818-354-6278 MEDIA ADVISORY: M06-186 NASA SCHEDULES BRIEFING TO ANNOUNCE SIGNIFICANT FIND ON MARS WASHINGTON - NASA hosts a news briefing at 1 p.m. EST, Wednesday, Dec. 6, to present new science results from the Mars Global Surveyor. The briefing will take place in the NASA Headquarters auditorium located at 300 E Street, S.W. in Washington and carried live on NASA Television and www.nasa.gov. The agency last week announced the spacecraft's mission may be at its end. Mars Global Surveyor has served the longest and been the most productive of any spacecraft ever sent to the red planet. Data gathered from the mission will continue to be analyzed by scientists. Panelists include: - Michael Meyer -- Lead Scientist, Mars Exploration Program, NASA Headquarters, Washington - Michael Malin -- President and Chief Scientist, Malin Space Science Systems, San Diego, Calif. - Kenneth Edgett -- Scientist, Malin Space Science Systems - Philip Christensen -- Professor, Arizona State University, Tempe, Ariz. |
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Dec 7 2006, 11:43 AM
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Member Group: Members Posts: 593 Joined: 20-April 05 Member No.: 279 |
A question!
What's a likely figure for the viscosity of this water? I don't think I've ever seen viscosity estimates produced for (transient) liquid water in a Mars environment. Is it high (because the water's cold) or low (because it's near-boiling)? Andy |
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Dec 7 2006, 12:24 PM
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Special Cookie Group: Members Posts: 2168 Joined: 6-April 05 From: Sintra | Portugal Member No.: 228 |
What triggers my imagination in this great discovery is not the gullies...
Is the place where they we're originated... Beneath...What can hide beneath? I'll just join the choir...What great days we are living! -------------------- "Ride, boldly ride," The shade replied, "If you seek for Eldorado!"
Edgar Alan Poe |
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Dec 7 2006, 01:58 PM
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Special Cookie Group: Members Posts: 2168 Joined: 6-April 05 From: Sintra | Portugal Member No.: 228 |
If the water excavates the gullies deplacing the darker material underneath where are the vestiges of that material?
Mixed with the lighter one? -------------------- "Ride, boldly ride," The shade replied, "If you seek for Eldorado!"
Edgar Alan Poe |
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Dec 7 2006, 02:37 PM
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Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
If the water excavates the gullies deplacing the darker material underneath where are the vestiges of that material? Mixed with the lighter one? I assume it's being proposed that as the wet avalanches dry out the deposited materials become encrusted with light coloured salts. |
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Dec 7 2006, 03:00 PM
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#6
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Special Cookie Group: Members Posts: 2168 Joined: 6-April 05 From: Sintra | Portugal Member No.: 228 |
Looking through this image there are some lighter layers being disrupted by the mouvement (in blue).
Can they influence in the colour of the material deposited at the end of the flow?... If you look there's a first stage where the rush excavates but then, finding one of this layers (a), maybe because it's force has lost strenght, is no longer capable of "breaking" it and it jumps over, running now only over the surface...Then this second stage white flow looks like is loosening power again untill finds another bright layer ( B ) and it ceases a short after this and there's no other under... Original image -------------------- "Ride, boldly ride," The shade replied, "If you seek for Eldorado!"
Edgar Alan Poe |
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