NASA unveils image of snow-covered dunes on Mars
NASA's Mars Reconnaissance Orbiter has beamed back an image of the Red planet's snow-covered dunes creating circular patterns over a rust-coloured background. "Unlike on Earth, this snow and ice is carbon dioxide, better known to us as dry ice," NASA mentioned. The $720-million spacecraft was launched in August 2005 and attained Martian orbit in March 2006.