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We've heard it a hundred times before. There's never anything to watch ontelevision.
我們已經(jīng)聽過很多次了，沒有什么好看的電視節(jié)目。
Fifty channels and not one worth sitting down to.
50個(gè)頻道卻沒有一個(gè)值得看。
Well,PBS is nice.But you get the idea.
嗯，公共廣播是一個(gè)不錯(cuò)的選擇。但是你知道的...
If you feel bored by TV, why not try a little experiment?
如果你覺得電視節(jié)目很無聊，為什么不嘗試一個(gè)小實(shí)驗(yàn)?zāi)兀?/p>
All you have to do is turn to a station where nothing is currently being broadcast.
你所要做的就是調(diào)到一個(gè)沒有任何節(jié)目的頻道。
What do you see?That blankscreen isn't really blank.
你看到了什么？黑色的屏幕并不真正是黑的。
Rather it's full of random-seeming flashes of light,sometimes called “snow.”
相反屏幕上似乎是充滿了隨機(jī)排列的小光點(diǎn)，有時(shí)叫做“雪花”。
Now, what if we told you that you have just discoveredevidence of the Big Bang?
現(xiàn)在如果我告訴你你發(fā)現(xiàn)了宇宙大爆炸的證據(jù)，你相信嗎？
It's true. Around three percent of the little sparkles of light you see on an unused channel are caused by photons left over from the Big Bang, the explosionthat started off our entire universe.
這是真的。在你看到的這些未使用頻道上出現(xiàn)的小光點(diǎn)中，有三分之一是由宇宙大爆炸遺留下來的光子引起的。這些爆炸形成了我們整個(gè)宇宙。
Here's how it works.
現(xiàn)在，讓我們看看它們是怎樣工作的吧！
For about 300,000 years after the Bang, the universe was so dense that photons couldn't go anywhere without bumping into electrons and being annihilated.
宇宙大爆炸30萬年后，密度很大，光子走到哪都會(huì)碰到電子相互結(jié)合而湮沒，
At that 300,000 year mark, however, things cooled off enough to allow atoms to form.
但是這時(shí)候溫度下降，原子得以形成。
That gave electrons something to do instead ofalways intercepting photons.
這就讓電子有事可做，而不總是攔截光子。
The photons were set free, to cruise endlesslythrough space, right up to the present day—about 15 billion years later.
光子自由后，不斷地穿梭于太空中，直到今天，大概150億年以后。
These photons fill all of space, trillions passing through your body every second.
這些光子占滿了所有的空間。每一秒就有幾萬億個(gè)光子穿過你們的身體。
They are so weak by this point, though, that you can't see them or sense them.
這一刻它們是如此微弱，你既不能看見也不能感受到。
Unless you open up an antenna to a similar wavelength and listen.
除非你打開一個(gè)有類似波長(zhǎng)的天線的設(shè)備聽聽看，
Your television set is just the machine to do this.
你的電視就是這樣的機(jī)器。
So take another look at that fuzz.It's brought to you by the origin of thecosmos.
再看看絨毛，這是從宇宙起源時(shí)就帶來的。
