Jezero's Delta (IMAGE) Brown University Caption Jezero crater, where NASA plans to land a new Mars rover next year, is home to the remains of an ancient river delta. Researchers have now found deposits of hydrated silica, a mineral that's especially good at preserving microfossils and other signs of past life, near the delta. Credit NASA/JPL/JHUAPL/MSSS/Brown University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.