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Like this moon wrapped in thick clouds,Titan.
土卫六，被厚云笼罩着
There's an atmosphere down here
它有大气层
There's wind, rain ,even seasons
有风、雨，甚至有季节
Rivers, lakes and oceans
有河流、湖泊和海洋
It looks so familiar, so similar to Earth.
看起来和地球很像
But that's not water, it's liquid natural gas
但那不是水，是液态天然气
Hundreds of times more natural gas than all the Earth's oil and gas reserves
这里天然气比我们地球的油气储量多几百倍
Maybe, one day, we'll use this energy to fuel a colony.
或许有一天，我们把它当做一个燃料基地
Assuming there isn't life here already
假设土卫六上早已没有生命
The Huygens space probe is here to find out
惠更斯号探测器在这里寻找答案
It's telling us there's organic material in the soil.
它报告说土卫六的土壤中存在有机成分
But it's so cold, minus 300 degrees
但这儿太冷了，低到零下300度(华氏)
There's no way life could develop
生命无法发展
Unless Titan warms up.
除非土卫六变暖
The Sun is supposed to get hotter
有人预言太阳会变得越来越热
When it does maybe life will spring up here...
真是这样，也许这里会出现生命
...just like it did on Earth
就像数十亿年前的地球
And as the Earth gets too hot for us, maybe we'll move to Titan.
当地球热到我们不能居住的时候，或许我们可以搬到土卫六
One day, we might call this distant land home
到那时，也许我们就会把这个遥远的地方称为家
Home.
家
We're at least 700 million miles away now.
离我们至少7亿英里
After this we lose visual contact with Earth.
过了这个点，我们就看不见地球了
We're standing on a cliff
我们正站在悬崖边上
Looking out over a great chasm that stretches to the beginning of time.
眺望着通往时间起点的巨大深渊
Do we have the courage to jump?
我们有勇气跳下去吗？
We're in the solar system's outer reaches.
我们在太阳系的外围
Unseen from Earth, unknown for most of history
在地球上看不得这里，古人不知道这里的存在
It's like diving into the depths of the ocean
就像潜入深海
