Daily Cosmobite – 10th anniversary of discovery of Eris

Eris and Dysnomia. NASA, ESA, MBrownOn January 5, 2005 the dwarf planet and trans-Neptunian object Eris was discovered. It was named after the Greek goddess of Strife and Discord – quite appropriately. Eris brought on the debate about the definition of a planet and subsequently the demotion of Pluto to a dwarf planet.


Dwarf planet Eris and its moon Dysnomia. Image by NASA, ESA & M. Brown.




Leave a Reply

Your email address will not be published. Required fields are marked *