NASA’s Juno Spacecraft will arrive at Jupiter in the next few day after nearly five years in space. While it’s purpose is primarily to study Jupiter’s origins, interior structure, deep atmosphere and magnetosphere, it’s worth remembering Jupiter is also host to the largest and some of the most interesting moons in the solar system.

Lets have a look at Jupiter’s four Galilean moons: Io, Europa, Ganymede and Callisto.

Io

Europa

Ganymede

Callisto

Made using: Celestia, Screen2Gif & GIMP
Based on: @spaceplasma’s solar system gifs
Profile sources: http://solarsystem.nasa.gov/planets, http://nssdc.gsfc.nasa.gov/planetary/factsheet/joviansatfact.html