Eris
A distant dwarf planet about as large as Pluto and more massive, whose discovery led to the definition of planet.
Local Solar System Foundation · Solar System Scope (CC BY 4.0)
Duniya wadda ta sa masu binciken sararin samaniya su yanke shawarar abin da wata duniya ce, da kuma dalilin da ya sa aka sake rarraba Pluto.
An gano Eris a shekarar 2005. Yanayinsa na musamman, mai tsayi da tsayi yana ɗaukar shi daga kusan AU 38 zuwa 98 daga rana, kuma orbit ɗaya yana ɗaukar kimanin shekaru 560.
Wannan ya fi girma fiye da Pluto. Samun wani abu mai girma fiye da Neptune ya sanya kungiyar kimiyya ta duniyar ta yi fassarar kalmar “planet” a shekarar 2006. Kuma watarsa Dysnomia ta sa ya yiwu a auna nauyinsa.
Data sources
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