Liquid (water?) flows on Mars Now!!, page 5
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reply posted on 1-11-2009 @ 05:48 PM by ArMaP
reply to post by Imagir



Why unnatural? It doesn't look different from the other natural-looking things around it?

What do you consider unnatural in it?


reply posted on 1-11-2009 @ 08:06 PM by Soylent Green Is People
reply to post by smurfy



It's not only the cold that prevents liquid water from existing on the surface of Mars, it's also the very low atmospheric pressure.

Any liquid water that may somehow itself on the surface of Mars would very quickly turn into a gas. Even if Mars was warm enough for liquid water, there is not enough air pressure to keep water in its liquid state.

Like I described in an earlier post, water on Earth would do the same thing in a vacuum. Even at normal room temperature, water would seem to "boil away" in a vacuum.


reply posted on 2-11-2009 @ 02:11 AM by Imagir
Originally posted by ArMaP
reply to
post by Imagir



Why unnatural? It doesn't look different from the other natural-looking things around it?

What do you consider unnatural in it?


I consider absolutely anomalous a "circular" rock with a "hole into the center" and rested on some “legs”...



Like this one...






reply posted on 2-11-2009 @ 06:49 AM by malcr
Here's a couple of links to photos taken by ESA:

www.reinhardkargl.com...

www.ias.u-psud.fr...

Sorry they are not the original links but I just a did quick Google for the images.

The second image is most telling, clearly liquid is present in the gully as indicated by the colour change!

regards,

Malcolm


reply posted on 2-11-2009 @ 01:06 PM by smurfy
reply to post by Soylent Green Is People

Hi Soylent,
I agree that against both pressure and the cold liquid water would be defeated. But if there was an area with high enough pressure,(there are some very deep basins) and the water if salty would have a higher boiling point, so then perhaps you could have the escaping water from Aquiferous rocks existing for a time, possibly until the sun goes down. There is some moisture in the Martian atmosphere but so little the escaped water would eventually evaporate into the atmosphere.



reply posted on 2-11-2009 @ 01:35 PM by Soylent Green Is People
reply to post by smurfy


I agree that there may be conditions on Mars under which liquid water may exist for more than a fleeting instant.

Like I said in one of my earlier posts, I believe NASA scientists thought that water mixed with soil (in muddy flows) could flow for a while prior to evaporating. I believe this happens because the "local" pressure inside the mud caused by the soil in that mud can help keep the water liquid, at least for a short time.

Chemistry is not my strong suit, so I don't know if salt would help water resist evaporation in ultra-low atmospheric pressures (although it would help resist freezing). Is there a chemistry reason that the salt would help resist evaporation? Perhaps it would have the same effect as the soil in the mud.


reply posted on 2-11-2009 @ 03:40 PM by Imagir
reply to post by ArMaP



Again excellent work.
But also in this HiRISE image, The "ANOMALY" is still there.

What is that circular Rock?





[edit on 2-11-2009 by Imagir]

[edit on 2-11-2009 by Imagir]


reply posted on 2-11-2009 @ 03:59 PM by ArMaP
reply to post by Imagir



I know it's there, or did you thought that it was visible just by luck, on a 4047x69999 pixels image?

As I said, that's a strange rock, and there are more strange rocks in that place.
(click for full size)


But I was saying that I don't see that rock near the liquid flow as unnatural looking, and I thought that was the one you were talking about, right?


reply posted on 2-11-2009 @ 04:08 PM by Imagir
reply to post by ArMaP



Right ArMaP.

Only an "mine anomalous" digression about these Strange martian rocks!



reply posted on 2-11-2009 @ 04:26 PM by Imagir
reply to post by l_e_cox



Ice on surface, methane in atmosphere, and now water....?
Maybe there was and there is, right now, Alien life on Mars?

I begin to think so....



reply posted on 2-11-2009 @ 04:49 PM by smurfy
reply to post by Soylent Green Is People

Sorry Soylent,
I was away at a meeting for a while. I would think that Salt water would take a lot longer to evaporate, and if it was muddy Salt water it would take longer again, a sort of Tug o' War between the dry Atmosphere and the solution. I suppose you could say, how long does it take to dry out a brick?

Edit to add this link,
news.nationalgeographic.com...

I found this link and I am surprised that it seems to have had little attention, instead of the ice that the Phoenix lander found. In the story you will see that they think that the water was actually leached out of the Atmosphere, at least in this case.

[edit on 2-11-2009 by smurfy]


reply posted on 4-11-2009 @ 01:07 PM by SideWynder
reply to post by ALLis0NE



"I used the model to look for regions that meet the minimum requirements for liquid water -- above the triple point and below the boiling point," explained Haberle. "According to the model, the highest surface pressure, 12.4 millibars, occurs at the bottom of the Hellas Basin (a low-lying area created by an ancient asteroid strike). The problem is that the boiling temperature there is only +10 °C. It can't get very hot or the water will boil away."

What about BEER???? a tall one at +5 C sounds good to me!!!!!
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