J James Gordon New member Jan 24, 2011 #1 isn't the atmosphere of a planet created by the size, kind of like the reason titan has an atmosphere and our moon doesn't. so why does Pluto which is much smaller have an atmosphere and Mercury doesn't.
isn't the atmosphere of a planet created by the size, kind of like the reason titan has an atmosphere and our moon doesn't. so why does Pluto which is much smaller have an atmosphere and Mercury doesn't.