NASA unveils image of snow-covered dunes on MarsStaff Writer | August 30, 2017
NASA’s Mars orbiter has beamed back a stunning image of the red planet’s snow-covered dunes creating beautiful patterns over the rust coloured background.
Space The image was taken on May 21
Unlike on Earth, the snow and ice is carbon dioxide, better known to us as dry ice.
When the Sun starts shining on it in the spring, the ice on the smooth surface of the dune cracks and escaping gas carries dark sand out from the dune below, often creating beautiful patterns. On the rough surface between the dunes, frost is trapped behind small sheltered ridges.
NASA’s Jet Propulsion Laboratory manages the Mars Reconnaissance Orbiter, which was launched in 2005 and attained Martian orbit on March 10, 2006. ■