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The days may pass quickly but the Earth changes slowly.
一天過得快，但地球變得慢。
To understand the making of our planet we need to fast forward through millions of years.
要了解我們的行星是如何形成，必須將時間快轉數百萬年。
3.9 billion years ago, a hail of meteors attack the Earth. It's debris left over from the solar system's formation.
39億年前，我們遭太陽系形成時剩余的碎屑攻擊。
Inside the meteors are crystals that look like grains of salt.
瞧瞧流星里這些奇怪的晶體，它們看起來像鹽粒。
And inside the crystals are minute droplets of water.
它們內部有細小水滴。
These deadly missiles could contain the vital ingredient for life on Earth.
看來這些致命飛彈可能含有賦予地球生命的關鍵要素。
Only a small amount of water exists inside each meteorite,
每顆隕石各只有微量的水，
but as they bombard the Earth for over 20 million years,
然而它們轟炸地球超過兩千萬年，
pools of water grow.
水池紛紛出現。
The Earth's core remains molten,
水聚集在堅硬地表，
but its surface has cooled enough to form a crust.
地心依舊是融熔狀態。
The air is around 170 degrees.
但地表已降溫至7、80攝氏度。
In the future, there's a chance we could swallow this very water.
未來我們喝的可能就是這種水。
Every sip, every puddle, every drop of water in every ocean, is billions of years old.
每一口、每一灘，跟海里的每一滴水，都有數十億年歷史。
And it may have travelled millions of miles to reach us, carried inside a meteor.
它或許移動數百萬公里，隨著流星來到這里。
The Earth looks more familiar,
這樣的地球看來比較熟悉，
but it's still a dangerous place.
但危險依舊存在。
Winds are faster than the most destructive hurricanes today.
這陣風的速度等于甚至超越破壞力最強的颶風。
