In the outer Solar System, the dwarf planet Eris is locked in a mutual dance with its moon Dysnomia 1. Eris, the most massive object known in the Solar System beyond Neptune, is so distant that it ...
Two nearly-identically sized worlds — Eris and Pluto — float distantly in the same frozen region of our outer solar system. A NASA spacecraft has visited Pluto, but not Eris, and each is so distant ...
The International Astronomical Union announces the names (136199) Eris for the dwarf planet provisionally named 2003 UB313 and Dysnomia for its Moon. The dwarf planet formerly known as 2003 UB313 ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results