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.

 

 

 

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