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published in the journalargues that the ice layers on Mars could be thick and dark enough from their dusty contents to block out solar radiation that gets in throughAccording to the researchers' computer modeling experiments, the ice may stay intact on the surface but melt within when the Sun hits it — and with harmful radiation effectively blocked,On Earth, craters created by embedded dust particles causing the ice below to melt over time are known as "cryoconite holes.
It's a deceptively simple concept — though the researchers are not making any bolder proclamations yet.To be clear, nobody involved in the study is saying anything definitive about the possibility of life on Mars., "but instead we believe that dusty Martian ice exposures in the mid-latitudes represent the most easily accessible places to search for Martian life today."
"People have found microorganisms that live in these shallow subsurface habitats on Earth," the JPL postdoc told. "The microorganisms typically go dormant in the winter when there is not enough sunlight to form liquid water within the dusty ice."
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