Kafin wucewar New Horizons, akwai ra'ayoyi biyu masu saɓani game da tsarin cikin gida na Charon: wasu masana kimiyya sun yi tunanin Charon ya zama wani abu mai rarrabe kamar Pluto, tare da dutsen dutse da mayafin kankara, yayin da wasu suka yi tunanin zai zama iri ɗaya a ko'ina. An sami shaidar da ke tallafawa tsohuwar matsayin a 2007, lokacin da Gemini Observatory ya lura da ɗakunan ruwa na ammoniya da lu'ulu'u na ruwa a farfajiyar Pluto ya ba da shawarar kasancewar lu'ulu'u mai aiki na hasken rana. Tambaya: Me ya sa aka ba da shawarar cewa Charon ya kasance mafi girma bayan shekaru dubu talatin?
Pluto