Clyde Tombaugh speaks: "PLUTO SEEMED TO BE THE MOST LOGICAL NAME. SEE, MOST OF THE NAMES OF THE MYTHOLOGICAL DEITIES HAD ALREADY BEEN GIVEN TO THE ASTEROIDS, AND THERE WEREN'T VERY MANY GOOD ONES LEFT. " "AND OF COURSE, YOU MAY OR MAY NOT REALIZE, THE FISSIONABLE ELEMENT PLUTONIUM WAS NAMED PLUTONIUM BECAUSE WE NAMED THE PLANET PLUTO. "