穿过小行星带继续前进,我们进入了气体巨行星区域:木星、土星、天王星、海王星,所有这些都使地球看起来像个侏儒。
Paradoxically, while the temperatures required for liquid water exist only in the inner solar system, the key building blocks of life, including water itself, occur primarily beyond the asteroid belt.矛盾的是,虽然液态水所需的温度只存在于太阳系内部,但生命的关键组成部分,包括水本身,却主要存在于小行星带之外。
Like a frozen asteroid belt, it's littered with chunks of ice and frozen methane and ammonia.象一个冰冻的小行星带一样,它的上面布满冰柱及凝固的甲烷及氨。