Martian dust devils,artwork. Mars is a rocky desert world with no surface water. Wind erosion creates sandy deserts,and thermal heating creates localized vortices that can spin dust up into the atmosphere,a phenomenon called a dust devil. Dust storms can sometimes cover the whole planet. The rocks' orange colour is due to a high content of iron oxides. The Martian atmosphere,less dense than Earth's,is mostly carbon dioxide. Surface temperatures are well below freezing. The gravity is about one third of that on Earth | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Van Ravenswaay, Detlev |
Bildgröße: | 5315 px × 3487 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |