Live data from Hacker News

Signs of Liquid Water Found on Surface of Mars, Study Says

nytimes.com

191–193 of 193 posts

Re: Signs of Liquid Water Found on Surface of Mars, Study Says

#191
post #5

The first I have heard of Don Juan Pond ( https://en.wikipedia.org/wiki/Don_Juan_Pond ) although I wouldn't say it looks like a swimming pool ( http://www.lakescientist.com/wp-content/uploads/2014/04/don-... ). Edit: Here is an article from brown that also draws parallels between Don Juan and Mars: https://news.brown.edu/articles/2013/02/antarctica

Not so long ago it was stated frequently and with certainty that there was no liquid water on Mars. That there could be no liquid water on Mars. Which having read into the topic I thought was obviously non sense. Now every one is like there's water on mars, we've know for a while - you can see the flows. In fact we deliberately don't go to places likely to be wet for fear of cross contamination. I feel like I have be…

[citation required]

Re: Signs of Liquid Water Found on Surface of Mars, Study Says

#193
post #94

Earlier quoted context omitted.

> Life is very, very persistent, and niches will be filled. But I think it's safe to assume it's quite fragile at the very beginning, and therefore conditions must be milder for it to appear at all. Once it takes off it's probably much more sturdy.

There's strong speculation that there was an ocean on Mars, many years ago. Possibly mild enough to get started.

> There's strong speculation that there was an ocean on Mars, many years ago.

Yep. Here's a great book on the topic:

http://www.amazon.com/Travelers-Guide-Mars-William-Hartmann/...

Post reply on HN