wardens-oath:

something-in-the-way-she-knows:

hyvapaiva:

Jupiter’s moon, Callisto.

is no one going to explain what all the lights are

they’re impact craters! callisto is one of the most heavily cratered object in the solar system, and as far as my very basic research has just gone, the light parts are essentially iced over impact craters

so, essentially, we’re looking at something with a very frosty/icy surface. they’re bright because they reflect the sun!