It's believed that a wormhole is a combination of black and white holes.

人们相信虫洞是由黑洞和白洞组成的。

That is, on the other side of a black hole, there's a white hole.

也就是说黑洞的另一边，有一个白洞。

If you go into a black hole, you won't become the stuff coming out of the white hole.

假如你进了黑洞，你不会变成从另外一边的白洞里出来的东西。

So even if a white hole did somehow occur, it would be incredibly unstable.

因此，即使真的以某种方式出现了白洞，它也非常不稳定。

And if white holes existed, that's essentially what they'd do.

如果存在白洞，那基本上就是他们会做的。

So why does anyone think white holes might exist in the first place?

那么为什么有人首先认为白洞可能存在呢？

White holes in nature are as impossible as a thing can be, while still being technically possible.

自然界中的白洞是不可能的，但在技术上仍然是可能的。

White holes only exist in math.

白洞只存在于数学中。

(INTRO) In theory, white holes are black holes that are going backwards.

(INTRO) 理论上，白洞是倒退的黑洞。

In reality, a white hole would violate the second law of thermodynamics.

实际上，白洞会违反热力学第二定律。

So a real white hole would probably only last for a few seconds before it collapsed in on itself to become a black hole.

因此，一个真正的白洞可能只会持续几秒钟，然后就会自行坍缩成为黑洞。