Inside most galaxies a supermassive black hole lurks.

在大多数的银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" .

研究的是特大质量、极度活跃的黑洞，叫做“耀变体”。

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

人们相信银河系中心有一个巨大的黑洞。

Most galaxies are built around supermassive black holes.

大多数星系都是围绕超大质量黑洞建造的。

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

该星系的中心是一个特大质量的黑洞。

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

超大质量黑洞要大得多，直径达数百万或数十亿公里。

So make sure to choose a supermassive one.

所以一定要选择一个特大质量的恒星黑洞。

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

观测超大质量黑洞附近的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400万倍的超大质量黑洞。

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

中子星是极其密集的超大质量星体爆炸后残留下来的物体，这些星体曾经是超新星。

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

静止星系的中心有超大质量的黑洞，在那里发生了许多碰撞。

Even supermassive black holes in galactic centers evaporate.

即使是星系中心的超大质量黑洞也会蒸发。

There are also supermassive black holes.

还有超大质量的黑洞。

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

们现在认为这些超大质量黑洞是与星系同时形成的。

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

最后是位于大多数星系中心的超大质量黑洞。

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的超大质量黑洞。

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

这些缺少暗物质的矮星系，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.

星系包含着数以亿计的恒星和行星某些星系，甚至在其中心还含有大质量黑洞。

Other sources should exist, however, chief among them mergers of supermassive black holes weighing millions to billions of suns.

然而应该存在别的来源，其中最主要的是超大质量黑洞的合并，而这些黑洞有数百万至数十亿颗太阳那么重。