Leopard-Spotted Mars Rock Could Hold ‘Clearest Sign of Life’ Yet, NASA Says
NASA’s Perseverance rover found a mudstone rock in Mars’ Jezero Crater with mineral patterns and organic compounds that scientists call a “potential biosignature.” The minerals, vivianite and greigite, often form from microbes on Earth, but NASA says this is not proof of life. The sample was collected in July 2024 and analyzed for a year before publication. Further study on Earth is needed, but the Mars Sample Return mission faces funding uncertainty.