Data from China's unresponsive Zhurong rover suggests that Mars had snow and frost as recently as 400,000 years ago.
Mars may have had liquid water on its surface as recently as 400,000 years ago, data from China's Zhurong rover suggests.
"We inferred that these dune surface characteristics were related to the involvement of liquid saline water formed by the subsequent melting of frost/snow falling on the salt-containing dune surfaces," Qin Xiaoguang , a geophysicist at the Chinese Academy of Sciences and first author of the new study, said in a statement . The findings were published April 28 in the journal Science Advances .
But Qin's team's findings could overturn that notion. They determined that patterns of ridges and fissures on Utopia Planitia are most likely the result of thawing snow or frost. What's more, based on the weathering and cratering rate of Mars' surface, the researchers believe that the features formed between 1.4 million to 400,000 years ago.
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