Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Matsakaicin matsakaici na Callisto, 1.83 g / cm3, yana ba da shawarar haɗuwa da kusan daidaitattun sassa na kayan dutsen da kankara na ruwa, tare da wasu ƙarin ƙarancin ruwa kamar ammoniya. Matsakaicin kashi na kankara shine 49<unk>55%. Ba a san ainihin abun da ke cikin dutsen dutsen Callisto ba, amma mai yiwuwa yana kusa da abun da ke cikin nau'in L / LL na yau da kullun chondrites, wanda ke da ƙarancin ƙarfe gaba ɗaya, ƙaramin ƙarfe ƙarfe da ƙarin baƙin ƙarfe fiye da H chondrites. Matsakaicin nauyin baƙin ƙarfe zuwa silicon shine 0.9<unk>1.3 a cikin Callisto, yayin da rabon hasken rana yake kusan 1:8. Fuskar Callisto tana da albedo na kusan 20%. An yi tunanin cewa yanayin shimfidar sa ya yi kama da tsarinsa gaba ɗaya. Kusan infrared spectroscopy ya bayyana kasancewar ruwan kankara absorption makada a zango na 1.04, 1.25, 1.5, 2.0 da kuma 3.0 micrometers. Ruwan kankara kamar yana ko'ina a saman Callisto, tare da kashi 25<unk>50%. Binciken babban ƙuduri, kusa da infrared da UV spectra da aka samo ta hanyar jirgin sama na Galileo da daga ƙasa ya bayyana abubuwa daban-daban waɗanda ba kankara ba: magnesium- da iron-carrying hydrated silicates, carbon dioxide, sulfur dioxide, da yiwuwar ammonia da kuma daban-daban kwayoyin halitta. Bayanai na bakan suna nuna cewa saman Callisto yana da bambanci sosai a ƙaramin sikelin. An haɗu da ƙananan ɗakuna masu haske na tsarkakakken ruwan kankara tare da ɗakunan cakuda dutsen da kuma wurare masu duhu waɗanda aka yi da kayan da ba kankara ba. Fuskar Callistoan ba ta da daidaito: hemisphere na gaba ya fi duhu fiye da na baya. Wannan ya bambanta da sauran tauraron dan adam na Galilean, inda akasin gaskiya ne. Hemisphere na baya na Callisto kamar an wadatar da shi a cikin carbon dioxide, yayin da hemisphere na gaba yana da ƙarin sulfur dioxide. Yawancin sabbin tasirin tasiri kamar Lofn suma suna nuna wadatar carbon dioxide. Gabaɗaya, tsarin sunadarai na farfajiyar, musamman a cikin yankuna masu duhu, na iya kusanci da wanda aka gani a kan asteroids na D-type, waɗanda farfajiyarsu ta kasance daga kayan carbon.  Tambaya: Mene ne mafi tsawo zango na ruwa kankara sha band?
3.0 micrometers