CINN4M0N said:
Pluto was already on The magic schoolbus space game as a planet, so it's too late to turn back now.
Q.E.D it's a planet.
Oh, I remember that! Good times : D
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I heard that the reason for the change is because Pluto cannot clear it's trajectory of neighbors, but I don't really buy that. If an object the size of Jupiter were to suddenly invade our planet's trajectory, does that mean Earth is no longer a planet, because is certainly can't remove Jupiter from its path.
I know that what I said is speculation on my part, but there are planets called "hot Jupiters" orbiting other stars that would easily displace of destroy a planet the size of the Earth.