Dave Eicher, Editor:
With all the history behind us, redefining what constitutes a planet now is silly. If an object is large enough to be spherical and orbits only the Sun, not a planet, it should be considered a planet. Thus, Pluto should remain a planet and Charon should still be considered a moon.
However, historically defined asteroids in the main belt and the Kuiper belt should remain asteroids. Thus, Ceres should not be considered a planet either. Why rewrite history? Xena, on the other hand, having scattered outward from the Kuiper belt and not being an historically known object, and also large enough to be spherical, would be the 10th planet.Click here for Eicher's bio.