On January 5, 2005, astronomers at NASA discovered Eris, the second-largest dwarf planet in the solar system. Eris is just ...

WASHINGTON (Reuters) - Dwarf planet Eris, similar in size to its better-known cosmic cousin Pluto, has remained an enigma since being discovered in 2005 lurking in the solar system's far reaches.

For three-quarters of a century, schoolkids learned that our solar system has nine planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. But things changed nearly five ...

(Above: An artist concept of the dwarf planet Eris. The sun is the small star in the distance. Courtesy NASA/JPL-Caltech) (WHTM) — In 2005 the team of Mike Brown, Chad Trujillo and David Rabinowitz ...

The small icy worlds on the edge of our solar system may be better contenders for life than we first thought, scientists have found. The dwarf planets of Eris and Makemake, situated in the Kuiper Belt ...

A newly found object may set a new record for the most distant dwarf planet in the solar system. The object, called V774104, lies about nine and a half billion miles from the sun, or two to three ...

Three times more distant from the Sun than Pluto (almost 10 billion miles), Eris is the largest dwarf planet in the Solar System. It takes Eris more than twice as long to orbit the Sun as Pluto (about ...