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Is circumnavigation possible on Phobos or Deimos?

  1. Apr 18, 2014 #1
    I know that Mar's moon's, Phobos and Deimos, do not have enough mass to be round, but does this mean that if an astronaut was on the surface of either of the two, they could not circumnavigate it? Is it possible to circumnavigate an astronomical body that is not completely spherical?
  2. jcsd
  3. Apr 18, 2014 #2


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    Staff: Mentor

    Of course. Just start walking until you go all the way around the moon's surface and are back where you started.
  4. Apr 19, 2014 #3


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    Science Advisor

    It definitely is possible. You can circumnavigate the Earth and it is not completely spherical.
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