NASA's Perseverance Rover Uncovers Complex Water History in Mars' Jezero Crater

NASA's Perseverance rover has revealed a surprisingly intricate history of water within Jezero Crater on Mars. Contrary to expectations of finding only lake sediments in the crater's Margin Unit, scientists discovered ancient igneous rocks that show evidence of alteration by water on at least three distinct occasions, suggesting a past involving ancient lakes, groundwater, and later hydrothermal activity.