NASA's Curiosity Rover Uncovers Trove of Yellow Crystals on Mars

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Since October 2023, the Curiosity rover has been exploring a region that is rich with sulfates. In May, it accidentally crushed a small rock in Mars' Gediz Vallis channel, a surface feature of the red planet believed to have been an ancient river. The cracked rock revealed never-before-seen crystals made of pure sulfur.