By now you probably know that the International Astronomical Union came out with some guidelines for what is considered a planet. This effort to reclassify planets started when UB 313 (Xena) and its moon where discovered in 2003.
I've mixed feelings about the whole thing… Pluto should remain a planet… it is large enough to be discovered back in 1930. And what the heck, it has been a planet my whole life!
Pluto is now considered a dwarf planet, together with Ceres, the largest asteroid in our solar system, and Xena.
Between planetary guidelines and .mobi guidelines, I'll tell you… do you think those guidelines are serving us well?
I just noticed that Pluto's entry in Wikipedia has been updated already to reflect the new dwarf planet classification — that's pretty quick… That's the power of user-generated content!
ceo