Callisto, the fourth moon of Jupiter's, takes 17 days to orbit Jupiter. If I stand on the surface of Callisto and see Jupiter high in the sky over my head, and then wait 8.5 Earth days in the same spot, where will I see Jupiter?

Question

Quizplus · Accepted Answer

Since Callisto is tidally locked to Jupiter, it always shows the same face to the planet. This means that if you see Jupiter directly overhead, it will remain in that position relative to your location on Callisto's surface, regardless of how much time passes.

Callisto, the Fourth Moon of Jupiter's, Takes 17 Days to Orbit