Lunar Shine was asked why Pluto wasn't a planet anymore!
This was her response:
You see, there are three rules for a celestial body to be considered a planet. This criteria was set in place in year 2006, after the discovery of Eris.
The criteria is as follows:
1) Be in orbit around the sun.
Yes, Pluto orbits the sun. But so do thousands of other asteroids.
2) Have sufficient mass to assume hydrostatic equilibrium.
In other words, be spherical in shape. (Not perfectly, though. Like us, planets arenít perfect either!)
3) Have cleared the neighbourhood around itís orbit.
This is where Pluto fails the criteria. Not only does Pluto share his orbit with plenty of other Kuiper belt objects, but he also flies into Neptuneís orbit!
But please donít be sad! Pluto doesnít really care much that heís been Ďdemotedí. He just likes to mind his own business.
Or as he worded it to me ďI DO WHAT I WANT.ď
Heís always kind of been the anti-conform type.
Edit: For the love of all things holy PLEASE Stop commenting how "OMG NEPTUNE SHOULDN'T BE A PLANET EITHER" You are making yourself look like uneducated dumb asses.
I DIDN'T MAKE THE DAMN RULES. Go educate your self