A view of Gale Crater captured by NASA

The Curiosity rover discovers opal gems on Mars with evidence of a watery past

More than just a shimmering stone, garnet – rich in water – has now been found in Mars’ Gale Crater by NASA’s Curiosity Rover. Martian water ice is abundant in columns But not so much at the equator (where Gale Crater is located). NASA’s Mars Curiosity rover, which is currently exploring the crater, had previously …

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