When Bill Nye the Science Guy explains it on ABC News, it's a whole lot clearer than having the IAU issue a communique. Why CAN'T Pluto be a planet? Well, simply because - and this isn't Bill talking, but our one-sentence summary of him - Pluto is essentially a glorified comet.

Well, it's not a comet because it's too big to be classified as one, but as Bill points out, it is smaller than 1,500 kilometers, and is mostly made of ice. So, if it were orbiting in Mercury's path, instead of where it is on the fringes of our solar system, pretty soon it would become an even smaller piece of rock that once was Pluto's inner core. This is like saying you cannot call the surface of a frozen lake "real estate" to build a house on because when the summer comes, you can kiss that house goodbye.

"I mean, is that worthy [to be called a] planet, a planet that just evaporates? Pffshht! For crying out loud!"

From Bill's point of view, however, there is a bright side to Pluto losing planethood, as it shows how dynamic and changing the world of science could be. Learn someting new, something really new and really big, and it literally rocks your scientific world to the core, even of an ice dwarf like Pluto. Click Play on the YouTube clip below to hear and see ol'd Bill yourself.