Sagittarius, a star as it's known, is 4 million times more massive than our sun.

人马座，也就是我们熟知的恒星，其质量是我们太阳的400万倍。

Lurking in the center of the Milky Way Galaxy, however, is a Supermassive Class black hole known as Sagittarius A.

然而，潜伏在银河系中心的是一个超大质量级黑洞，被称为人马座 A。

In comparison, Sagittarius A has the mass of 4 million suns.

相比之下，人马座 A 的质量为 400 万个太阳。

The closest supermassive black hole to us, Sagittarius A, is 26,000 light years away.

距离我们最近的超大质量黑洞人马座 A 距离我们 26,000 光年。

This is because Sagittarius A packs a mass of four million suns into an infinitely dense point, creating a very strong gravitational field around it.

这是因为射手座 A 将 400 万个太阳的质量集中到一个无限密集的点，在它周围形成了一个非常强大的引力场。

But when it's done, good ol' Sagittarius A will be the " star" of the show.

但当它完成时，好人座A将成为节目的“明星”。

If you somehow managed to get yourself close to a black hole, like Sagittarius A, you'd be experiencing time at half-speed compared to people on Earth.

如果你设法让自己接近一个黑洞，比如射手座 A，那么与地球上的人相比，你就能体验到流逝速度减半的时间。

Instead, 12 teams around the world will set up radio telescopes calibrated to the same frequency -- 230 gigahertz -- all pointed at our supermassive black hole neighbor, Sagittarius A.

相反，世界各地的 12 个团队将架设校准到相同频率（230 千兆赫）的射电望远镜，全部瞄准我们的超大质量黑洞邻居人马座 A。

It's going to take quite a few months to get the data processed, so look for results in 2018. But when it's done, good ol' Sagittarius A will be the " star" of the show.

处理数据将需要几个月的时间，因此请在 2018 年寻找结果。但完成后，优秀的人马座 A 将成为节目的“明星”。