The "dragon scale" texture captured in this image from the Mars Reconnaisance Orbiter shows a region where the Martian bedrock has been altered by the presence of water. We see plenty of evidence for liquid water in Mars's distant past, but what about today? Researchers have explored this question by testing the conditions under which salty water can remain a liquid when it's mixed with Martian surface material. Their results suggest that liquid water might be more widespread on Mars than previously suspected. To learn more about this study, you can read our AAS Nova highlight and the corresponding research article in the Planetary Science Journal. [NASA/JPL-Caltech/UArizona]