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View Full Version : A River Ran Through It: Why Do They Think There Was Once Water on Mars?



Fraser
2012-Sep-28, 07:50 PM
This week’s big news was the announcement of evidence for flowing water on Mars, based on images of what appear to be smooth river rock-type pebbles found by Curiosity. Of course that’s a big statement to make, and for good reason — identifying water, whether present or past, is one step closer to determining whether [...]

More... (http://www.universetoday.com/97638/a-river-ran-through-it-how-do-they-know-there-was-once-water-on-mars/)