What Is the Order of Rotation Periods for the Galilean

question 256

Multiple Choice

What is the order of rotation periods for the Galilean moons, from shortest to longest? (Hint: All four moons are in synchronous orbits.)

• A) Io, Europa, Ganymede, Callisto
• B) Io, Ganymede, Europa, Callisto
• C) Ganymede, Europa, Io, Callisto
• D) Callisto, Ganymede, Europa, Io

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