Tiny Lakes Once Pooled on Ancient Mars, Only to Fade Away

Tiny Lakes Once Pooled on Ancient Mars, Only to Fade Away

Tiny Lakes Once Pooled on Ancient Mars, Only to Fade Away





Tiny Lakes Once Pooled on Ancient Mars, Only to Fade Away






                    


The Hellas Planitia region on Mars, where scientists believe that small lakes came and went regularly.

                    Credit: NASA / JPL / USGS




		Before Mars became a cold and dry world, the water once came and went gently on the surface of the planet, just as it does here on Earth. Now, scientists have identified the remnants of three different sets of these ancient lakes, some nearly 50 miles (77 kilometers) wide.

		Those three sets of bodies of water on Mars Probably everyone was trained differently, the scientists wrote behind the new research. One class was formed directly by precipitation, one was fed by water moving through the Martian soil and the other was fed by rivers transporting water through the surface. All the beds of the lakes studied are in a region called Hellas Planitia, the basin left by an ancient and massive impact.

		"These canals, hundreds of meters wide, traverse ash-laden volcanic lava and impact debris through the interior slope of the Hellas basin," co-author Virginia Gulick, geoscientist at the SETI Institute. he said in a statement Published by the institution.

The[[The search for water on Mars in images]

		Many of these lake beds He reminded the authors of similar characteristics here on Earth. For example, a temporary lake looks like a feature in eastern Washington formed by a catastrophic flood. Another looks more like features along the Mississippi River, where water has flown for centuries. A lake full of sediment seems to mimic the salty lakes high up in the Andes, where it is permanently cold and dry. If the lakes were close enough to a source of heat, the authors wrote, they may even have been habitable.

		The research is described in a paper Published on October 30 in the magazine Astrobiology.



	Email Meghan Bartels in mbartels@space.com or follow it @meghanbartels. Follow us @Spacedotcom Y Facebook. Original article about Space.com.



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