Inside most galaxies a supermassive black hole lurks.

在大河系中都会隐藏着一个黑洞。

But what about supermassive black holes?

但如果是超大质量黑洞呢？

And I study supermassive, hyperactive, black holes called " blazars" .

我研究是特大质量、极度活跃黑洞，叫做“耀变体”。

It's believed the center is a supermassive black hole.

人们相信河系中心有一个巨大黑洞。

Most galaxies are built around supermassive black holes.

大星系都是围绕超大质量黑洞建造。

At the center of the galaxy is a supermassive black hole.

该星系中心是一个特大质量黑洞。

Supermassive black holes are far bigger, millions or billions of kilometers across.

超大质量黑洞要大得，直径达百万或十亿公里。

So make sure to choose a supermassive one.

所以一定要选择一个特大质量恒星黑洞。

Seeing the whole area near a supermassive black hole can be helpful to scientists.

观测超大质量黑洞附近整个区域对科学家会有帮助。

It was a supermassive black hole 4 million times the mass of our sun.

这是一个质量是太阳质量400万倍超大质量黑洞。

Neutron stars are the extremely dense remnants of supermassive stars that have exploded as supernovae.

中子星是极其密集超大质量星体爆炸后残留下来物体，这些星体曾经是超新星。

Quiescent galaxies have supermassive black holes in their center, where many collisions take place.

静止星系中心有超大质量黑洞，在那里发生了许碰撞。

Even supermassive black holes in galactic centers evaporate.

即使是星系中心超大质量黑洞也会蒸发。

There are also supermassive black holes.

还有超大质量黑洞。

We now think that these supermassive black holes form at the same time galaxies do.

我们现在认为这些超大质量黑洞是与星系同时形成。

And finally there are the supermassive black holes that are at the center of most galaxies.

最后是位于大星系中心超大质量黑洞。

It is far smaller than the supermassive black holes found at the center of large galaxies.

其远远小于在大型星系中心发现超大质量黑洞。

Each of these low-dark matter dwarves orbited a supermassive galaxy, the way a moon might orbit a planet.

这些缺少暗物质矮星系，每个都围绕一个超大质量星系运行，就像卫星围绕行星运转一样。

Galaxies contain billions of stars and planets, and some may even have supermassive black holes at their center.

星系包含着以亿计恒星和行星某些星系，甚至在其中心还含有大质量黑洞。

Barring a breakthrough in exotic physics, there's only one energy source that could suffice: a supermassive black hole.

除非在奇特物理学上取得重大突破，否则只有一种能量来源可以满足需要：超大质量黑洞。