Astronomers meeting in Prague have drafted a proposal that would make way for a new planetary classification - the pluton(1). In addition to the eight "classic" planets, there would be three plutons-- Pluto, Charon, and "Xena," and more could be added as they are discovered. The pictured graphic(2) by Calvin J. Hamilton shows the size of Pluto and Charon compared to the United States.

1. http://news.scotsman.com/scitech.cfm?id=1194292006
2. http://www.solarviews.com/cap/pluto/plutousa.htm