Recent findings lend strong support to the theory that a black hole lies at the center of the Milky Way and of many of the 100 billion other galaxies estimated to exist in the universe.

最近的发现有力地支持了这样一种理论，即银河系中心，和宇宙中估计存在的1000亿个其他星系中的许多里有一个黑洞。