Eris is the largest known dwarf planet in the solar system. It is a trans-Neptunian object (TNO), orbiting the Sun in a region of space known as the scattered disc, just beyond the Kuiper belt ...

Scientists tracked the dwarf planet Eris as it passed in front of a star, finding that it's probably about the same size as Pluto. "Whether or not you agree with the IAU's 2006 resolution on the ...

Eris is about the size of Pluto but around 50% farther from the sun. The discovery of Eris in the Kuiper Belt beyond Neptune in 2005 prompted the debate that ultimately reclassified Pluto as a dwarf ...

January 5, 2005, is an astronomical anniversary that is not really marked but should be. It saw the discovery of dwarf planet Eris and how those very observations led to a new way to describe the ...

Eris is the largest dwarf planet in the solar system, larger than Pluto, and orbits at an average distance of 6,289,000,000 miles away from the sun, about 68 times further out than the Earth.

The dwarf planets in question, Eris and Makemake, are both found in the Kuiper Belt past Neptune's orbit and are far from the Sun's warmth, similar to fellow dwarf planet Pluto.

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. While Pluto was ...

While Eris is roughly the same size as Pluto and Makemake is about the same size as Pluto’s moon, Charon, both dwarf planets are far beyond even Pluto’s icy corner of the Solar System.

University of California, Santa Cruz Professor of Planetary Sciences Francis Nimmo recently co-authored a Science Advances paper about the internal structure of the dwarf planet Eris.