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Silicon, perhaps.
或许是硅
Silicon has slightly different properties,
硅的特性与碳有稍许的不同
but it could do the same job.
但却可以起到相同的作用
With the right ingredients,
由于成分的恰当组合
ultra-low-temperature life might be possible.
极端低温生物便成了可能
If so, I think energy would be scarce,
果真如此，那么将极其缺乏能量
so things around here would move very slowly.
所以这里的生物将会移动的非常缓慢
Other possibilities are even stranger.
其他的可能性就更加怪异了
The astronomers searching for far-off planets have discovered
天文学家们对遥远行星的探索已经发现
that many seem to be giant gas plantets.
许多行星似乎都是巨大的气体行星
Like our own Jupiter and Saturn.
就像我们的木星和土星
Perhaps there are aliens made of gas.
或许是会有由气体形成的外星人的
Aliens living here would need to consume something.
这里生活的外星人需要消耗一些物质
I imagine they could use
我猜想它们能够利用
the power of lightning storms that constantly rage on planets like these.
时常在这些行星上爆发的闪电风暴的能量
If such extreme life-forms are possible,
如果这种极端的生命形式是可能的
then life elsewhere in the universe
那么存在于宇宙其他地方的生命
could be very common, indeed.
将会是非常普遍的
There are certainly many more planets that fall outside
处于恒星的"金发姑娘"区域之外的行星
the "goldilocks" regions of stars than fall inside them.
当然要比处于其内的行星多很多
It suddenly seems like
突然间你会发现
there could be life nearly everywhere you look.
似乎你所看到的所有地方都有生命的存在
But, ultimately,
但是，从根本上讲
I think it doesn't really matter what aliens are made of.
我认为外星人由什么构成并不重要
To me, it's what they can do that counts.
对我来说，它们能做些什么才是重要的
Are they thinking about the cosmos, too,
它们也会研究宇宙吗
trying to unlock its secrets just as we are?
也会像我们一样去探索宇宙的秘密吗
In short, has alien life evolved as we have
总而言之，外星生物是否同我们一样
and developed intelligence?
已进化成了智能生物
