New Delhi: The US space agency NASA has released a beautiful winter's view of a gullied crater in Mars' northern hemisphere.
The image is captured by NASA's Mars Reconnaissance Orbiter (MRO) and it shows the location with the most impressive known gully activity on martian surface.
According to NASA, gullies are active in the winter due to carbon dioxide frost, but northern winters are shorter and warmer than southern winters, so there is less frost and less gully activity.
An enhanced-color image cutout shows recent gullies with bright colors.
The University of Arizona, Tucson, operates HiRISE, which was built by Ball Aerospace & Technologies Corp., Boulder, Colo. NASA's Jet Propulsion Laboratory, a division of Caltech in Pasadena, California, manages the Mars Reconnaissance Orbiter Project for NASA's Science Mission Directorate, Washington.