Scientists and NASA officials are debating whether Pluto should be reclassified as a planet, challenging the 2006 decision that demoted it to dwarf planet status. The discussion involves fundamental questions about how we define planethood as astronomers discover rogue worlds and exoplanets that don't fit traditional categories.
·NASA's head has called for Pluto to be restored to planetary status, reigniting a decades-old controversy
·Astronomers struggle with defining what counts as a planet as discoveries of rogue worlds and exoplanets complicate traditional criteria
·The 2006 demotion of Pluto hinged on whether objects must clear their orbital neighborhoods, a rule Pluto fails to meet
·New exoplanet discoveries reveal habitable zone definitions also need revision as science evolves
drawn from BBC Science Focus Magazine, The Planetary Society, AgFunderNews, National Geographic · updated 22d ago