Mars and Phobos. Illustration of the planet Mars and Phobos, one of its moons, seen from orbit. Phobos is irregular in shape, measuring 19 by 21 by 27 kilometres. It orbits 9400 kilometres above Mars, taking just over 7.6 hours to complete an orbit. Mars, the fourth planet from the Sun, is an arid desert world with a thin atmosphere of carbon dioxide. It has a diameter of around 6800 kilometres. | |
Licence : | Libre de droits |
Crédit: | Science Photo Library / Garlick, Mark |
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Property Release : | Non requis |
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