In Order of Size, What Position is the Moon In?

Question posed by Mary.

When looking at the Solar System as a whole, our Moon comes in at number 14 based on mean radius, nuzzled in between Jupiter's moons Io and Europa (13th & 15th respectively), and appears higher up the table than the dwarf planets Eris (17th), Pluto (18th), Makemake (23rd), Haumea (25th) and Ceres (33rd). Our Moon appears only three places below the planet Mercury (11th) on this list. You can see the whole list here.

If we look at just the known moons of our solar system, Earth's Moon fares rather better, coming in at 5th place, behind Ganymede, Titan, Callisto and Io (in order, largest first).

Here's a great graphic comparing the sizes of a good portion of our solar system's terrestrial bodies:

Solar System Terrestrial Bodies Comparison Chart, from wikipedia user Riffsyphon1024. The values given are average diameters.


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