M87

A Hubble Space Telescope image & shows M87 [ lower right ] a giant elliptical galaxy .

哈勃望远镜拍摄下来的图象：M87一个巨大的椭圆星系。

Its thousands of stars had been part of the M87 galaxy , about 50 million light-years away .

星团中的星星是室女A星系的一部分，离地球大约5千万光年远。

A.The stars in a star cluster at the center of M87 could exert a strong gravitational force without tearing the cluster apart .

这句话是说在M87的中间，行星运用一种重力不让彼此互撞而撕裂。

So it turns out that the black hole in M87 , that we saw before , is six and a half billion solar masses .

是的。事实证明M87星系中的黑洞，就是我们之前看到的那个，重达65亿太阳的质量。

This is the galaxy -- we 're going to zoom into the galaxy M87 , it 's 55 million light-years away .

这就是我研究的星系。我们现在要放大M87星系，它距离我们5500万光年。

Supermassive black holes like the one in galaxy M87 probably grow not only by feeding on infalling gas and stars but also by mergers of smaller black holes .

象M87中这样的超级黑洞，它们的发展很可能不仅仅是依靠吞进流入的气体和恒星，而且也依靠吞并较小的黑洞。

By definition , it can 't be seen , so NASA scientists focused instead on the tiny core of the galaxy M87 , a super massive " cosmic engine " 50 million light years from earth .

根据定义，它不能被看到，因此，美国宇航局的科学家集中在小星系M87的星系的核心，一个超大质量的“宇宙引擎”，距离地球5000万光年，而不是。