Making use of briny water on Mars (IMAGE) Washington University in St. Louis Caption This illustration shows Jezero Crater -- the landing site of the Mars 2020 Perseverance rover -- as it may have looked billions of years go on Mars, when it was a lake. Vijay Ramani's lab has developed a way to extract hydrogen and oxygen out of the briny water that may remain under the Martian surface. Credit NASA/JPL-Caltech Usage Restrictions Use allowed with proper attribution 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.