Thursday, July 10, 2014
How Big Are The Solid Planets? A Handy Illustration
This excludes Neptune, Saturn and Jupiter, which lack solid surfaces, but includes Moons and minor planets. It is remarkable how much of the solid surface of our solar system is on Earth. Other bodies in the solar system are surprisingly small.
This also illustrates some of the limits to accommodating an expanding human population by settling space. Very thinly inhabited parts of the surface of Earth like the Sahara desert, Antarctica, the Australian Outback, Siberia, and the surfaces of the oceans are much more attractive places to live than anyplace that is not on Earth.