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Why is Galileo Regio, the large circular feature on Ganymede, so dark?
Q8: All the Galilean moons are in synchronous
Q11: The only spacecraft to have visited Uranus
Q17: Most scientists think catastrophes played little role
Q23: The orbits of most comets:<br>A) are like
Q25: The _ theory is thought to explain
Q36: Saturn's cloud layer is over twice as
Q47: William Herschel was the discoverer of Uranus.
Q50: The terra of Venus are rare,but large
Q65: The magnetic field tilts of which two
Q85: Which two satellites of Jupiter are considered