On January 5, 2005, astronomers at NASA discovered Eris, the second-largest dwarf planet in the solar system. Eris is just slightly smaller than Pluto, and it orbits the sun about three times farther ...
Astronomy on MSN
Jan. 5, 2005: Eris is discovered
In 2003, Palomar Observatory astronomers were in the midst of their search for planet-sized objects beyond Neptune when they imaged Eris – but because they'd limited their search based on the speed ...
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