Supermassive Black Hole

A supermassive black hole is an extremely dense object with a mass millions or billions of times that of the Sun, found at the centers of galaxies. Its gravity is so strong that nothing, not even light, can escape from it once crossed the boundary called the event horizon. These black holes influence the motion of stars and gas nearby and can power energetic phenomena like quasars. They likely form from the merging of smaller black holes and the accumulation of matter over cosmic time, playing a key role in galaxy evolution.