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The Fermi Paradox 费米悖论 Tim Urban
Everyone feels something when they’re in a really good starry place on a really good starry night and they look up and see this:
在合适的地点看见满天繁星,每个人都会有不同的感受:
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Some people stick with the traditional, feeling struck by the epic beauty or blown away by the insane scale of the universe. Personally, I go for the old “existential meltdown followed by acting weird for the next half hour.” But everyone feels something.
仰望星空,有的人感觉被这史诗般的美丽震撼,有的人被无限的宇宙带走了思绪,我更容易在下半个小时想到超自然的灾难。每个人都会联想出一些奇妙的东西。
Physicist Enrico Fermi felt something too—”Where is everybody?”
物理学家恩里科费米看着看着突然想问:“我们在哪?”
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A really starry sky seems vast—but all we’re looking at is our very local neighborhood. On the very best nights, we can see up to about 2,500 stars (roughly one hundred-millionth of the stars in our galaxy), and almost all of them are less than 1,000 light years away from us (or 1% of the diameter of the Milky Way). So what we’re really looking at is this:
无云星空看起来很大,其实它只是我们的邻居。运气好的话,我们可以看见最多2500颗星(大约占银河系百万分之一),几乎所有的星星距离我们不到1000光年(银河系直径的百分之一)。所以我们真正在看的是: |
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