Salt lakes found under Martian polar ice caps – Brisbane Times

“So there are in total four lakes, if we can call them that, that we can see under the south polar ice,” she said.
Dr Caprarelli said the discovery of more lakes under the Martian ice meant they could all but rule out geothermal causes for the liquid water, leaving extreme salinity as the most likely explanation.
“We know that salt lowers the freezing temperature of water, and we see this phenomenon on Earth in some places, where water forms inside ice sheets,” she said.
“It had been hypothes…

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