Everything we know about physics could still be all turned on its head. 我們所知物理的一切很可能大翻盤。
Back in September, scientists said that they discovered subatomic particles that can travel faster than light. 先前九月時，科學家表示他們發現亞原子粒子能行進得比光還要快。
Now, they've gone back to the lab, fine-tuned the experiment, and the result? 如今，他們已經重回實驗室，精細調整了實驗，而結果呢？
Well, it seems to confirm the startling finding, as Atika Shubert explains. 似乎證實了這項驚人的發現，請看阿緹卡‧舒伯特說明。
Do they or don't they? 他們會還是不會？
Those pesky neutrinos are back and stubbornly refusing to obey the laws of physics and slow down. 那些麻煩的微中子又回來了，而且堅決不肯遵守物理定律，也不肯放慢腳步。
Remember this? In September, scientists announced some shocking results. 記得這件事嗎？九月時，科學家發表了一些驚人的結果。
They shot a particle beam from Switzerland to Italy in 2.4 milliseconds. That's what it should take for a beam of light to cover that distance. 他們從瑞士發射一道粒子光速到義大利，歷時二點四毫秒，這正是光速跑完這段距離所應耗費的時間。
But neutrinos, those tiny subatomic particles with virtually no mass and no electrical charge, 但是微中子，就是那些實際上沒有質量且不帶電的細小亞原子粒子，
well, they managed to arrive 60 billionths of a second faster than light. 它們就是有辦法比光速快六百億分之一秒抵達終點。
Pandemonium in the world of physics, and here's why. 這真是物理界的災難，我來告訴你為什麼。
Energy equals mass times the speed of light squared. It's the bedrock of physics, Einstein's theory of relativity. 能量等於質量乘上光速的平方，這是物理學的基石，也就是愛因斯坦的相對論。
The fundamental principle: nothing can go faster than the speed of light. 基本的原則是：沒有任何東西跑得比光快。
Without that universal speed limit, 要是沒有這放諸四海皆準的速限，
physics as we know it would unravel, allowing for such mind-bending stuff as time travel. 我們所知的物理學可能會因此分崩離析，像時空旅行這種令人費解的事情就可能成立。
Of course, the problem with time travel is something called the Grandfather Paradox, 當然，時空旅行的一個問題是所謂的「祖父悖論」，
which means, if I've traveled back in time, and then I accidentally kill my grandfather, 也就是說，如果我旅行到過去，然後意外殺了我的祖父，
which means, Atika, you would never have been conceived and, therefore, could not travel back in time to see yourself. 這表示阿緹卡就永遠不會被生出來，因此也就不可能旅行回到過去看見自己。
So, you can see why scientists went back to measure and remeasure, tweak and retweak the tests. 所以，你能理解為什麼科學家要針對這些測試再三測量、反覆調整。
And on Friday, they announced this: those speedy neutrinos are still faster than light. 週五他們宣布，那些高速的微中子仍然跑得比光快。
So, is Back to the Future suddenly a real possibility? 那麼，電影《回到未來》頓時可能成真了嗎？
Scientists say two other labs in Japan and the U.S. are now conducting separate tests. But we won't get the results until next year. 科學家表示，另外兩個分別在日本和美國的實驗室目前正在分頭進行測試，但我們要到明年才能知道結果。