Pluto is called a "double planet". That's because the size of the planet (er, dwarf planet, *sigh*) and it's moon Charon are not much different in size. How embarrassing!
I wish they'd mass produce Hubbles. I'd love to own one! Look at that shot!!
They decided against calling it a Pluton when the geologic community said something to the effect of "Hey numbnuts, we already use that term!" The resulting newspaper article likened it to botanists finding a new class of plants and calling them 'animals'.
It's so weird... our concept of the universe is very different than it was yesterday. Pluto joins 'Xena' and Ceres in the dwarf planet class. One unanswered question remains: Are there 11 total planets, both classical and dwarf?
Well, this has happened before. When Ceres was discovered, in the place where the planet between Mars and Jupiter ought to be, it was initially hailed as a new planet. Then came Pallas, and Vesta, and all the others, and they were bumped down to "planetoids", generally (and inaccurately) called "asteroids".
I'm more interested in finding out where the real 9th planet is. Remember, the existence of such a thing was predicted from the perturbations of the orbit of Neptune ; Pluto was found in a search for the thing, and for a while was thought to be it, and then it was proved that Pluto's mass was too small to pull mighty Neptune from his ordinary path, so everybody just forgot about it. There's probably another giant planet or two out there.
I thought the Planet X hypothesis had been abandoned because the discrepancies in Neptunes' orbit was nullified by more accurate measurements of the planet's mass.
You feel old? Imagine the people that remember when it was DISCOVERED! They've gone from 8 to 9 back to 8..
I hate the people that are saying "They should keep Pluto as an honory planet for traditions sake." The planet is less than 100 years old, that's not tradition, galatically speaking.
Somewhere about the house, I have a book that claims there are eleven planets. Mercury Venus The Earth Mars Vesta Juno Pallas Ceres Jupiter Saturn Herschel