Rostov Ars Centurion 23y 228 Oct 26, 2011 #28 ...there is no appreciable atmosphere on Eris, meaning it's at least 1/10,000 that of Pluto’s ...

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 ...