Astronomy Tuesday

Jupiter's Ganymede is the largest moon in the Solar System. In this image, taken by the Juno probe last week, you can see the ridges and craters that are the geologic wear and tear of life in our universe. It makes me wonder what the Earth would look like without the camouflage of oceans and icecaps and forests and cities, if we could see it stripped to the naked rock.

Image Credit: NASA/JPL-Caltech/SwRI/MSSS; Processing and License: Kevin M. Gill;