It Hasn't Rained on Mars for a Long Time, but These Sand Dunes Look Like Raindrops, and They're Filled with Chemicals Made in Water

A recent image from the MRO shows rows of olivine-rich dunes in the Copernicus Crater on Mars, a feature that is quite rare here on Earth. The post It Hasn’t Rained on Mars for a Long Time, but These Sand Dunes Look Like Raindrops, and They’re Filled with Chemicals Made in Water appeared first on Universe Today.