« on: 11/09/2019 16:07:31 »
Is the earth the densest planet I always thought tha Mercury was.While the Earth is denser, Mercury is surpisingly dense for it size. With rocky bodies, density and size tend to go together. Venus is just a bit small in radius than the Earth, and has a somewhat lesser density at 5.24 g/cm^3, Mars at a little over 1/2 an Earth radius, has a density of 3.93 g/cm^3, and the Moon, at a bit more than 1/4 an Earth radius has one of 3.34 g/cm^3.
Mercury, on the other hand, larger than the Moon, but smaller than Mars has a density greater than Venus.
As an additional side note, this gives the smaller Mercury a slightly greater surface gravity than Mars.