Two years ago, planetary scientists reported the discovery of a large saltwater lake under the ice at Mars’s south pole, a finding that was met with excitement and some scepticism. Now, researchers have confirmed the presence of that lake — and found three more.
“From a thermal point of view, it has to be salty,” says Pettinelli.
The presence of the Martian lakes themselves is also still debated.
A Chinese mission that is on its way to Mars might offer one way to check the claims.
https://www.nature.com/articles/d41586-020-02751-1