Looks to me like this snow evaporates by sublimation, since it's unlikely that Mars can support liquid water. Interesting.
Still, it's clear that there has been running water on Mars at some point in its history.
I suspect that we will still find evidence of life on Mars eventually. I hope I'm still here to see that.
Viking 1 was launched on August 20, 1975 and arrived at Mars on June 19, 1976. The first month of orbit was devoted to imaging the surface to find appropriate landing sites for the Viking Landers. On July 20, 1976 Viking Lander 1 separated from the Orbiter and touched down at Chryse Planitia. Viking 2 was launched September 9, 1975 and entered Mars orbit on August 7, 1976. Viking Lander 2 touched down at Utopia Planitia on September 3, 1976. The Orbiters imaged the entire surface of Mars at a resolution of 150 to 300 meters, and selected areas at 8 meters. Viking Orbiter 2 was powered down on July 25, 1978 after 706 orbits, and Viking Orbiter 1 on August 17, 1980, after over 1,400 orbits.
So, 30 years later and now all these wanna be scientists will offer up there opinions. Wonder how much in government grants they will be seeking to keep their theories going. The whole surface of Mars was imaged and they are just now getting around to making summations. I got one. It is a dirt bowl full of rocks. Prove me wrong. Oh, I should qualify for a huge govenment grant for my summation.
ping
Ping to tricky_k_1972.
FWIW, I agree with MineralMan.
http://www.freerepublic.com/focus/news/1562874/posts?page=22#22