The results ultimately highlight a new set of areas that could potentially be home to fossilized remains of ancient alien life that may have evolved on Mars.
. Scientists who study Mars are dead set on trying to determine what locations of the Red Planet may have been home to these former bodies of water—since it’s exactly these places that could have been home to ancient extraterrestrial life.gets us closer to pinpointing where those locations might be. Researchers led by Caltech’s Jay Dickson have found how the global network of gullies located on the slopes of Martian craters seem to have been formed by repeated periods of melting ice.
“We know from a lot of our research and other people's research that early on in Mars history, there was running water on the surface with valley networks and lakes,” Brown University planetary scientist and study co-author Jim Head said in a press release. “But about 3 billion years ago, all of that liquid water was lost, and Mars became what we call a hyper-arid or polar desert.”
Some scientists previously thought that Martian gullies may have been carved out by carbon dioxide frost that evaporated from soil and allowed rubble to erode downhill. But the high elevation of the gullies caused others to speculate that meltwater had to have played a role. That sounds like a long time ago, but in geological terms, it’s fairly recent. And it means the gullies may, in fact, have been a prime habitat for any Martian micro-organisms to have evolved and thrived should other conditions have been met.
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