Curiosity Cracked Open a Rock on Mars And Revealed a Big Surprise
A rock on Mars spilled a surprising yellow treasure after Curiosity accidentally crashed through its unassuming surface. Last May, as the rover rolled its 899-kilogram (1,982-pound) body over the fragile mineral, the deposit cracked, revealing yellow crystals of elemental sulfur, known as sulfur. Although sulfates are fairly common on Mars, this represents the first pure…