This Day in History: Oct 21

[MelRodriguez]

On Oct 21st, 2003, scientists first discovered the dwarf planet Eris. When first found, there was some discussion that it was larger than Pluto which then led to questions about Pluto's categorization as a planet. The debate within the scientific community ultimately led the International Astronomical Union to "downgrade" Pluto to a dwarf planet in 2006.

The dwarf planet Eris seems to be aptly named as it was inspired by the Greek goddess of discord.