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  • Mercury is the smallest planet in the Solar system, Saturn is the second largest.
  • Mercury is the nearest to the Sun, Saturn is sixth furthest.
  • Mercury is a rocky [terrestial] planet, Saturn is a gaseous planet.
  • Mercury has no natural satellites, Saturn has at 60-150 moons.
  • Mercury does not have rings, Saturn does.
  • Mercury orbits the Sun at 47 km/s, Saturn travels at a more leisurely 9.7 km/s.
  • Mercury rotates on its own axis in 58.6 days, Saturn takes fewer than 11 hours.
  • At its equator, Mercury rotates at 10.9 km/h, Saturn at 35500 km/h.
  • The mean temp on Mercury is 167 deg C, on Saturn it is -139 deg C.
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7y ago

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