All the Galilean moons are in synchronous rotation, with the same face always pointedtoward Jupiter, except for tidally stressed Io.

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This means that all the Galilean moons rotate in such a way that the same face is always pointing towards Jupiter. However, Io is an exception to this as it is tidally stressed, causing it to have a slightly non-synchronous rotation. This statement is true. All the Galilean moons, including Io, are in synchronous rotation around Jupiter, except Io is also tidally stressed which causes it to experience volcanic activity and other geological processes that can lead to changes in its surface appearance over time.

All the Galilean Moons Are in Synchronous Rotation, with the Same