Artist's concept of Jupiter's four largest satellites laid out above the Earth and it's moon.
Artist's concept of Jupiter's four largest satellites laid out above the Earth and it's moon, showing their comparative sizes. From left to right, in order of their distances from Jupiter: Io, Europa, Ganymede, Callisto. These moons, also known as the Galilean moons, were first observed by the Italian astronomer Galileo over 400 years ago.
Size: 4920px × 3690px
Photo credit: © Walter Myers / Stocktrek Images / Alamy / Afripics
License: Royalty Free
Model Released: No
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