Stories tagged Eris

Sep
21
2006

Artist's concept of Eris.: Image courtsey NASA/JPL-Caltech.
Artist's concept of Eris.: Image courtsey NASA/JPL-Caltech.

The “Tenth Planet” that caused Pluto to lose its planetary status has been classified and named, and to the dismay of many, it was not named Xena. The International Astronomical Union has classified it as a dwarf planet and named it Eris, after the Greek goddess of Chaos, which is appropriate for the chaos it cause in the astronomical community over what should be defined a planet and what should not.

The debate centered around the argument that if Pluto was considered a planet, then 2003 UB313, as it was known at the time, should be a planet as well as it was larger than Pluto. The debate culminated at the International Astronomical Union meeting last month where Pluto was stripped of the title “planet” and relegated to “dwarf planet” along with Eris and the former asteroid Ceres.

Eris' moon was also given a formal name: Dysnomia. In Greek mythology Dysnomia was the daughter of Eris.