Can we see black holes?
Can we see black holes?
If the mass of a star's collapsing interior is more than about three times that of our Sun, its gravity becomes so strong that even the neutrons cannot halt the process. Inexorably, the star continues to collapse until it turns into a black hole - the name given to a region of space where gravity is so powerful that nothing, not even light, is able to escape. This is why these gravity holes are 'black'. However, we are still able to detect black holes because their colossal gravity draws in surrounding matter which, as it descends into the black hole, becomes very hot and begins to glow - thereby revealing the black hole's position. Black holes don't only occur when a star dies. There are also monster black holes at the centres of galaxies which have a mass of millions if not billions of times that of our Sun. These are thought to have originated in the early stages of the universe, and there is even one of these super-massive black holes in the centre of our Milky Way.