coloration. look at the graphics show. you images i am talking about what the mars rover snapped. tracks of the rovers. see the marbles. same thing up there you have in your hand. that is from mars. this is from state of utah in the united states. they know water processes cause these formations giving them the sphere shape. weathering. taking the rock. holding, 25 million years old. want to show you the martian sunset. show you the maps. walk up to them. this is what you would see on the surface of mars. similar to earth. desert landscape. when the sun is setting. you have haze, dustin the apt muss fear. plenty of ice crystals. water vapor in the atmosphere as well. in fact measurement for one single earth years, taken up there by the curiosity rover, took temperature observations, moisture observations, humidities, 5%. and summer months. 100% in autumn and winter. mars curiosity found out once the sun sets. the moisture is able to be