Which of these motions is characteristic of the four Galilean moons of Jupiter?
A) Each of the four Galilean moons keeps the same face toward the Sun at all times.
B) Each of the four Galilean moons keeps the same face toward Jupiter at all times.
C) The four Galilean moons orbit the planet in the opposite direction to its rotation-retrograde motion.
D) The four Galilean moons orbit the planet in a plane carrying them over both the north and south poles of Jupiter.

Question

Quizplus · Accepted Answer

The four Galilean moons—Io, Europa, Ganymede, and Callisto—exhibit synchronous rotation, meaning they keep the same face toward Jupiter at all times, similar to how the Moon keeps the same face toward Earth.

Which of These Motions Is Characteristic of the Four Galilean