(August 1969) This mosaic of Mariner 9 frames (top), taken during the first orbit, shows the remnants of the south polar cap of Mars dimly through the great dust storm. Mariner 7 photographed the same area in A More
(1971) A Martian shield volcano, approximately 25 miles across at the crater, photographed consecutively by Mariner 9 with the wide-angle and telephoto lenses. The summit crater and groves down the flank probab More
(November 27, 1971) In pictures taken early in the Mariner 9 mission, this region, shows a dark mountain standing above the Martian dust storm. This higher resolution photograph shows that the area contains a c More
Description: (May 30, 1971) The most conspicuous feature yet observed on Mars by Mariner 9 is the darkish spot located near the top of this picture. It has been tentatively identified as Nix Olympica, a curious More
Description: (1972) Observation of dune activity--whether the movement of whole dunes or the movement of sediment on a dune--is the result of a direct link between the martian surface and its atmosphere. Observ More