On questions relating to Israel and the Palestinians, Democrats are on Neptune and Republicans are on Pluto.

FORBES: The Way We'll Be

Several panel members have favored dividing planets into categories: terrestrial planets (Mercury, Venus, Earth, Mars), giant planets (Jupiter, Saturn, Uranus, Neptune) and a third class that would include Pluto.

NPR: Dwarf Planets May Finally Get Respect

The "new" Solar System agreed at the IAU's General Assembly has eight planets - Mercury to Neptune - and at least three dwarf planets: Pluto, Eris and the largest asteroid in the Solar System, Ceres.

BBC: NEWS | Science/Nature | Astronomers name 'world of chaos'