My Very Educated Mother Just Served Us Nine?

The latest on the raging debate among astronomers as to what exactly constitutes a planet may leave out what has been our solar system's ninth planet for the last seventy or so years. The definition of a planet that has been submitted for a vote to the general assembly of the International Astronomer's Union would demote Pluto to a "dwarf planet" and would leave textbook editors, schools, and solar system modelers scrambling to make changes accordingly. Although Pluto would no longer be a part of our major planetary system as it has been for oh so many years, it will still be out their orbiting our sun exaclty as it has been and will always be looked upon with fondness.

Update: The new definition has been approved and Pluto is now officially a "dwarf planet", although it is really more an "ex-planet".