PIA01923: Gullies in Sirenum Terra, Mars

Target Name: Mars Is a satellite of: Sol (our sun) Mission: Mars Reconnaissance Orbiter (MRO) Spacecraft: Mars Reconnaissance Orbiter (MRO) Instrument: HiRISE Product Size: 1016 samples x 996 lines Produced By: University of Arizona/HiRise-LPL Full-Res TIFF: PIA01923.tif (3.04 MB) Full-Res JPEG: PIA01923.jpg (144.3 kB)

Original Caption Released with Image: This enhanced-color view shows gullies in an unnamed crater in the Terra Sirenum region of Mars. It is a sub-image from a larger view imaged by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter on Oct. 3, 2006. This scene is about 254 meters (about 830 feet) wide. The upper and left regions of this scene are in shadow, yet color variations are still apparent. The high signal to noise ratio of the HiRISE camera allows for colors to be distinguished in shadows. This allows dark features to be identified as true albedo features versus topographical features. Image Credit: NASA/JPL/Univ. of Arizona