Doctor Bill's What's New Page

Clearly Neptune is not a planet. How could it be, and not have cleared Pluto from it's orbit. Come to think of it commets, metorites and other objects constantly cross the path of Earth too. I don't think we have ANY planets in this solar system, according to the new definition of planet.

One big problem with the definition, is it only sort of works in solar systems with a gas giant. In solar systems without a gas giant or second star, the planets will not be drawn into an orbital plane, and are more likely to have highly elliptical orbits. Consiquently, the orbits will cross, and even Earth size "planets" would not meet the definition of planet. If they wanted a definition that only fit solar systems with a gas giant then they should have just made the definition require planets to be in the orbital plane of a gas giant or a second star.