Proposal would define “planets” and “plutons”


  • Sarah Zielinski


Pluto would be classified as a type of planet named a ‘pluton’ under a new definition of ‘planet’ that is being considered by the International Astronomical Union (IAU) General Assembly, the IAU announced on 16 August.

IAU President Ron Ekers said, ‘Recent new discoveries have been made of objects in the outer regions of the solar system that have sizes comparable to and larger than Pluto. These discoveries have rightfully called into question whether or not they should be considered as new planets.”