A zahiri, Callisto shine kawai jiki sama da 1000 km a diamita a cikin tsarin hasken rana wanda bai nuna alamun da aka samu ba tun lokacin da tasirin ya gyara farfajiya. Tare da tsufa na kimanin shekaru biliyan biliyan 4, Callisto yana da tsohuwar wuri mai faɗi a cikin tsarin hasken rana. Language: Hausa