Media-1_RSL.gif (IMAGE) SETI Institute Caption Development of RSL features at Palikir crater on Mars as viewed by the HiRISE camera on 6 occasions during Mars years 29-30. Credit Image Credit: NASA/JPL/University of Arizona Usage Restrictions Cite image credit 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.