Sunday, Jul 29th, 2012 ↓
You’ve probably heard that Mars has two very small moons, but just how small are they? Here is a striking scale comparison of Phobos superimposed upon a medium-size European city, Grenoble, France.Phobos has a highly irregular shape: roughly 26,8 x 18,4 km (somewhat potato-shaped, see here - and not very large), but it is still 7.2 times more massive than Deimos, the second Mars satellite.
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