Pluto Demoted, No Longer a Planet

Robert Roy Britt Senior Science Writer SPACE.com Thu Aug 24, 10:00 AM ET Capping years of intense debate, astronomers resolved today to demote Pluto in a wholesale redefinition of planethood that is a victory of scientific reasoning over historic and cultural influences. Pluto is no longer a planet . "Pluto is dead," said Caltech researcher Mike Brown, who spoke with reporters via a teleconference while monitoring the vote. The decision also means a Pluto-sized object that Brown discovered will ...