re: Pluto's out of the round loop, demoted to "dwarf".
"Planet: a celestial body that is in orbit around the sun, has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a ... nearly round shape, and has cleared the neighborhood around its orbit.â€
I like this classification scheme much better than the one last week that promoted small objects to 'planet' status just to avoid Pluto's demotion. It has a reasonable scientifically deterministic basis for its classification. I'd still prefer to wait another decade for us to really understand extra-solar non-fusing body dynamics via Kepler etc. before rushing out a classification scheme that risks obsolescence too quickly.