english: It has a very large, thick atmosphere, and in fact, its surface environment was believed to be more like the environment we have here on the Earth, or at least had in the past, than any other body in the solar system.
non_english: Má rozsiahlu, hustú atmosféru a verilo sa, že prostredie na jeho povrchu sa viac podobá pozemskému, alebo minimálne tomu, aké tu v minulosti bolo, než prostredie na ktoromkoľvek inom telese slnečnej sústavy.