Jul
15
Geological features on Mars + UFO sighting as documented by NASA. Atmosphere on Mars is thin and causes extreme temperature changes from night to day. It is also a very dry and cold place with carbon dioxide composing much of its atmosphere. Large craters, canyons and volcano\’s are scattered about this Martian terrain. Including vast sand dunes where dust devils flourish and where large dust storms obscure the sky for thousands of miles! Credit: NASA Spirit and Opportunity rovers from NASA took most of the images. Some are from the orbiter spacecraft.
