Alan Stern and his fellow New Horizons scientists really want Pluto to become a full-fledged planet again. The principal investigator of NASAs mission to Pluto, along with a few members of his team, want to change the definition of planets. According to the proposal they intend to present at the Lunar and Planetary Science Conference, they want the word planet to define any sub-stellar mass body that has never undergone nuclear fusion and that has sufficient self-gravitation to as…Read more