Nasa scientists find evidence of flowing water on Mars Prison Planet.com Posted on September 28, 2015 Posted in Aggregated No Comments Tagged with World News London Guardian | Liquid water runs down canyons and crater walls over the summer months on Mars. Share this:Share Share on Facebook (Opens in new window) Facebook Share on Reddit (Opens in new window) Reddit Share on X (Opens in new window) X Share on LinkedIn (Opens in new window) LinkedIn Email a link to a friend (Opens in new window) Email