Mars Orbiter Laser Altimeter, Thermal Emission Imaging System

This image taken by NASA Mars Reconnaissance Orbite on May 19, 2010, shows an impact crater that had not existed when the same location on Mars was previously observed in March 2008.

This image taken by NASA Mars Reconnaissance Orbite on May 19, 2010, shows an impact crater that had not existed when the same location on Mars was previously observed in March 2008.

MarsMars Reconnaissance Orbiter MRO