4 ms·

guessing less atmosphere = less erosion

• danielbln 11y ago
  Less gravity too.
  • pavel_lishin 11y ago
    I wonder what the tidal forces are like in the Pluto/Charon system.
    • javaru 11y ago
      Pluto and Charon are mutually tidally locked, meaning they always show the same face to each other. So the tidal forces would be very constant.