Name: 我們宇宙的五個謎團 🌌⭐ | BBC Ideas (Five mysteries about our Universe 🌌⭐ | BBC Ideas)
Uploaded: 2025-10-09T18:46:47.000Z
Duration: 6 min 14 s

The more we learn, the more we realize that there's a lot more that we do not know.

我們學得越多，就越發現還有好多好多我們不知道的事情。

There is no reason to believe that our universe is unique.

沒有理由相信我們的宇宙是獨一無二的。

It is quite possible that just as our universe was created, many universes were also created.

很有可能，就像我們的宇宙被創造出來一樣，也有很多宇宙被創造出來。

If that is the case, then we live not in a single universe, but

如果是這樣，那我們就不只活在一個宇宙裡，

in a vast collection of universes that physicists refer to as the multiverse.

而是活在一個物理學家稱之為「多重宇宙」的龐大宇宙集合中。

We can think of those as island universes, each with its own quirks, maybe even each with its own laws of physics.

我們可以把這些想像成「孤島宇宙」，每個都有自己的特色，甚至可能有自己的「物理定律」。

For example, there could be one of these other universes.

舉個例子，可能存在著其中一個這樣的其他宇宙。

Where gravity is a hundred times stronger than it is in our universe.

那裡的重力會比我們宇宙強上百倍。

If we could somehow prove conclusively the existence of multiple universes of the multiverse, that would be a genuine intellectual revolution, A complete change in our cosmic thinking.

如果我們能確切證明「多重宇宙」的存在，那將是一場真正的知識革命，徹底改變我們的「宇宙觀」。

The dark side of the universe is a really big mystery.

「宇宙的黑暗面」是一個巨大的謎團。

The dark matter and the dark energy make up no less than 96% of what the universe contains.

「暗物質」和「暗能量」加起來，佔了我們宇宙總質量的至少 96%。

The stuff that you and I, the Sun, the Earth, the stars, the galaxies are made of, that is just the icing on the cake.

而你我、太陽、地球、星星、星系所組成的物質，只佔了其中的一小部分。

It makes up only 4% of what our universe contains.

它們只佔我們宇宙總質量的 4%。

The most likely explanation for the dark matter is that it's made up some exotic fundamental particle that came into existence just a tiny fraction of a second after our universe was formed in the Big Bang.

對「暗物質」最可能的解釋是，它是由某種奇特的「基本粒子」組成的，這種粒子在我們宇宙於「大爆炸」中形成後極短的時間內就出現了。

We have compelling evidence that it's there.

我們有令人信服的證據證明它的存在。

We suspect it's a fundamental particle, but frustratingly, it has yet to be discovered.

我們懷疑它是一種「基本粒子」，但令人沮喪的是，它至今仍未被發現。

I think most people have heard about black holes.

我想大家應該都聽過「黑洞」。

但可能比較少人聽過「白洞」。

White holes are, in a way, the opposite of a black hole.

白洞在某種程度上，可以說是黑洞的相反。

White holes kind of vomit everything out.

沒有任何東西能從黑洞裡出來。

Whether white holes exist or not, it's a matter of heated debate.

白洞到底存不存在，這點爭論得相當激烈。

Of course, if they do exist, they are fascinating.

當然，如果它們真的存在，那真的非常迷人。

And they may even raise the possibility that they act as tunnels to other universes.

而且它們甚至可能引發一種可能性，就是它們可以作為通往其他「多重宇宙」的通道。

Or indeed to other epochs in our own universe.

或者甚至是我們宇宙裡的其他時期。

The current view in cosmology is that everything we see in the universe, everything started life as something called a quantum fluctuation.

目前在宇宙學裡的觀點是，我們在宇宙中看到的一切，所有生命都源於一種叫做量子漲落的東西。

When the universe was born, it expanded very rapidly in a very short period of time, known as cosmic inflation.

宇宙誕生時，在極短的時間內迅速膨脹，這段時期被稱為宇宙暴脹。

As the universe expanded, these quantum fluctuations were stretched.

隨著宇宙膨脹，這些量子漲落也被拉伸了。

And the stretching seeded the universe with tiny ripples.

而這種拉伸在宇宙中播下了微小漣漪的種子。

These ripples yet are the origin of galaxies, galaxy clusters, planets, the Earth and people.

這些漣漪正是星系、星系團、行星、地球以及人類的起源。

The mystery here is, is it really possible that a sub microscopic entity, like a quantum fluctuation, could eventually grow into the Milky Way galaxies?

這裡的謎團是，像量子漲落這樣一個亞微觀的實體，真的有可能最終成長為銀河系嗎？

If you had told me that a few years ago, I would have thought, but

如果幾年前你跟我說這件事，我會覺得你瘋了。

And yet today, the standard model of the formation of cosmic structure is exceptional.

但今天，宇宙結構形成的標準模型卻非常出色。

Time fascinates not just physicists, fascinates everyone.

時間不僅讓物理學家著迷，也讓每個人都著迷。

然而，時間是一個相對的概念。

For example, if you travel faster and faster and faster, time slows down more and more and more.

舉個例子，如果你越跑越快，時間就會越來越慢。

If you travel at this point speed of light, time simply stops.

如果你以光速旅行，時間就完全停止了。

If you look at the equations of physics, it's striking that time can go forwards or backwards.

如果你看看物理學的方程式，你會驚訝地發現時間可以向前或向後流動。

The equations of physics don't distinguish.

Because of this, many people believe that you can travel into the past because there's nothing in the equations of physics that forbids you doing that.

所以，很多人相信你可以回到過去，因為物理學方程式裡沒有什麼能阻止你這麼做。

It is quite possible that we could in principle travel back in time, so long as we do not introduce any inconsistency with the future.

理論上，我們很有可能回到過去，只要我們不引入任何與未來不一致的地方。

所以這就是五個重大的宇宙奧祕。

But each mystery, as is always the case in science, leads to another even bigger mystery.

但正如科學中一貫的情況，每一個奧祕都會引出另一個更大的奧祕。

And we haven't even got to possibly the biggest mystery of them all.

而我們甚至還沒談到其中可能最巨大的奧祕。

If you enjoyed that, be sure to check out these videos next.

如果你喜歡這支影片，記得看看接下來這些影片。

And if you haven't already, hit the subscribe button and click the bell to get a notification each time we upload a new video.

如果你還沒訂閱，請按下訂閱按鈕並點擊小鈴鐺，這樣我們每次上傳新影片你都會收到通知。