Photos taken at intervals by the Juno probe.
As it approached jupiter it was able to get these fine snaps that were later stitched together and animated to produce a sped up version of what it would look like if we could watch the largest satellites of Jupiter orbit around their parent body.
In this animation we see at least one full orbit of the innermost moon Io.
The two innermost moons can also be seen disappearing on the far side and reappearing after they pass through jupiter's shadow
By National Aeronautics and Space Administration / Jet Propulsion Laboratory / Malin Space Science Systems - "Juno Approach Movie of Jupiter and the Galilean Moons" by NASAJuno on YouTube, Public Domain, Link
