As if this planet wasn’t mysterious enough, now they think Mars may have had acid fog at certain times.

Dr Shoshanna Cole, a planetary researcher at Ithaca College, has pieced together a compelling story about how acidic water vapors may have eaten at the rocks in an area on Husband Hill in the Columbia Hills of Gusev Crater on Mars.

Let’s find out more on how they came to this hypothesis on page 2

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