If the orbital period of Jupiter's moon Ganymede is 7.15 days, what would be the view from a point on its surface at the equator?
A) Both the Sun and Jupiter would remain fixed in the sky above Ganymede.
B) Both Jupiter and the Sun would rise and set with a period of about 7.15 days.
C) The Sun, if visible, would always be at the same point in the sky, but Jupiter would rise and set with a period of about 7.15 days.
D) Jupiter, if visible, would always remain at the same point in the sky, but the Sun would rise and set with a period of a few days.

Question

Quizplus · Accepted Answer

Ganymede is tidally locked to Jupiter, meaning the same side of Ganymede always faces Jupiter. Therefore, Jupiter would appear to stay in the same place in the sky from a point on Ganymede's surface. However, as Ganymede orbits Jupiter, the Sun would appear to rise and set relative to Ganymede's surface.

If the Orbital Period of Jupiter's Moon Ganymede Is 7