Ok, is Jupiter actually rotating towards the left of the camera and the apparent motion of the moons actually the fact that they are falling behind, relative to the rotation of the eye of the storm? But then that would mess with my answer to the first riddle...
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If the planet rotated toward the right, faster than the moons, they would appear to travel to the left, with the outermost, slower moon travelling apparently more quickly to the left, because it is falling behind the planets rotation more quickly than the innermost faster moon /1
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But if the time lapse movie was compiled in reverse (or, for that matter, filmed upside down) then the apparent trajectories would be reversed, which is what we seem to see, but the apparent relative difference in speed would be maintained /2
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