translation.en: 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.
translation.zh: 它有一个巨大、浑厚的大气 事实上它的气候 与地球大气非常接近 至少过去相较于其他行星来说是这样的