NASA’s Perseverance rover has uncovered high-purity quartz crystals on Mars, a discovery that could reshape the search for ancient life on the Red Planet. The crystals, along with other minerals such as opal,

NASA’s Perseverance rover found large crystals of quartz with a high purity on Mars, which probably had to have formed in the presence of hot water

How do these crystals show NASA where to look for evidence of life on Mars? Well, the history of Mars is still a bit of a mystery. While we wholly believe that it was once likely covered with oceans,