pluto has been demoted. >> correct. >> if you were over voting on pluto and whether it belonged in with the 3 others they were going to put in because pluto's size was comparable to the 3 others and they ought to get into this union too, how would you have voted? >> i would have voted the way the international astronomical delicacy voted. it was a wise decision. >> how would you have voted? >> the same way. it's bad to be tied up by historical artifacts so science can't progress into the future. >> so if -- that means we have 12 plan snets. >> no. >> you would voted against it. >> i would have voted there are 8 planets that are real planets. >> we can change -- we are really changing the planetary system, aren't we? by human will? and if we can do that in the instance of planets, can we do it elsewhere with regard to the universe? >> well, we're not changing the universe. all we're doing is talking about definitions, about words. and i think that the goal here is clarity. when pluto was discovered, it was a marvelous thing. new mexico deserves credit for having made an interesting disco

their own section in the yearbook. >> yeah. >> jimmy: this is what the dor -- the gomers like. >> plutohing. okay. it's actually a little bittersweet. the third thing they disliked the most was middle school. [ audience aws ] it was actually really sort of chang my perception of how i was as a kid. the fourth thing they disliked the most was changing for gym class. [ light laughter ] >> jimmy: oh, gosh. this is killing me. -- after school thing. >> i know. and this is -- this really says it all. the thing they dislike the most was begin -- i know. i know. >> jimmy: begin called -- >> i know. there was this one kid who i didn't even know his real name. >> jimmy: you don't know what his name was? jim nabors. wouldn't that be weird. 'cause then he became gomer pyle. >> exactly. >> jimmy: anyway, that's a weird -- >> yeah. you know, he sings opera, jim nabors. >> jimmy: he does? >> yeah. you should have him come on the show and sing oprah. i don't know if he'd -- >> jimmy: around? [ light laughter ] it sounds like a tgi -- like -- clip -- >> yeah. >> jimmy: -- next to me exploding. >> right

>> well, we can get into the whole pluto debate here if you wanted to. what does it take to be a planet? yeah, it's not a simple thing and it's subject to a fair amount of debate, but basically we're talking about a core, a central core: we like to think of something that has a nice regular circularized orbit if possible, something that's around a star and is orbiting in the way we think of... in our solar system. but, you know, as we found out with pluto, it got taken off the planetary list and is now considered something more akin to an overgrown asteroid. so there is a gray area to say the least. and as we look more closely into this finding with 1,200 planets, some of them will turn out to be false alarms and some of them may turn out to be planets we're not so interested in. but there's god to be in there that are in a so-called goldilocks zone, the not too hot not too cold zone where water can be present which might have a rocky surface which might lead us to believe there's life. >> lehrer: in terms of size, the 51... what is it 52... >> well, the