Lesson C4: The Moons of the Planets
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Why has Titan been able to retain its atmosphere?
Titan is too far from the Sun for solar radiation to evaporate its atmosphere.
The inner planets only have 3 moons among them, so why does Jupiter have so many moons?
Jupiter is much more massive and is close to the asteroid belt.
Phobos and Deimos most closely resemble:
Asteroids
With a diameter of 4,879 km, the planet Mercury is actually smaller than which of the Galilean satellites?
Ganymede
In order of decreasing diameter, the Galilean satellites are:
Ganymede, Callisto, Io, Europa
