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If you guys haven't seen this already:

https://www.nasa.gov/press-release/nasa-...day-s-mars

Read it and weep.

The MRO has found signs of hydrated minerals and salts on seasonal downhill flows on several craters. Points to briny water flowing downhill.
Fingers crossed in the near future we'll send a probe to that location to take a look at what's in this water. Double fingers crossed for evidence of a past martian biosphere.
This old article by John M Dollan describes a water-flow on Mars.
http://www.orionsarm.com/eg-article/4a6f97fc61c1d
Atmospheric pressure is so low there that any liquid water would start to boil as soon as it formed.
(09-30-2015, 12:06 AM)Rynn Wrote: [ -> ]Fingers crossed in the near future we'll send a probe to that location to take a look at what's in this water. Double fingers crossed for evidence of a past martian biosphere.

According to Nick Bostrom we should hope that there is no life and has never been any life on Mars:

http://www.nickbostrom.com/extraterrestrial.pdf
I may be naturally pessimistic, but when I did the fermi equation, including rather a bunch of things he didn't include and my own best guesses for some of the probabilities he assumed....

I got approximately 1 in 100 billion. Coincidentally 100 billion is our approximate estimate for the number of stars in this galaxy.

So I figure it's probably about even odds that we're the only ones.
I remember reading a short story by Kim Stanley Robinson unrelated to the Mars trilogy (I think the title of the story was Discovering Life or something like that) where, in a near-future Earth of the 20th/21st Century, NASA discovers signs of bacterial life on Mars. The main character despairs over the fact that terraforming Mars will surely not happen in the near future.

http://www.planetary.org/blogs/emily-lak...ement.html
Reader-friendly article that details what hydrated minerals might be present in these surface features.

Quote: - The best mineral matches to the spectral data are magnesium perchlorate, magnesium chlorate, and sodium perchlorate.

- The presence of perchlorate salts could lower the melting temperature of water at Martian conditions by 40 kelvins, making it much easier for water to melt.