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茫茫宇宙中有无数各种类型的天体,如恒星、行星、小行星、卫星、流星、彗星、类星体等等。众多天体构成一个星系。我们的太阳系在银河系中。像银河系这样的星系,宇宙中有数千亿个。在这些数不清的天体中,有一种特殊的天体,叫黑洞。它既不发光,也不反射光,而是吸收光。光是宇宙中运动速度最快的,但也逃脱不了黑洞的引力,只要遇上黑洞,就再也出不来了。因此,它们是不能被观察到的。黑洞似乎是一种极其“贪婪”的天体,不管什么物体,只要撞上它,就被它“吞食。”
There are innumerable various types of objects in the vast universe, such as stars, planets, asteroids, satellites, meteors, comets, quasars and so on. Many celestial bodies form a galaxy. Our solar system is in the galaxy. There are hundreds of billions of galaxies in the universe like galaxies. Among these innumerable objects, there is a special object called a black hole. It neither emits light nor reflects light, but absorbs light. Light is the fastest moving in the universe, but also can not escape the gravity of the black hole, as long as the encounter black hole, never get out. Therefore, they can not be observed. A black hole seems to be an extremely “greedy” object, which “swallows” whenever it hits it.