Black Hole

A black hole is a region of spacetime with such a strong gravitational field that nothing, including light, can escape it. The boundary separating a black hole and outer space is called the event horizon. A black hole appears in the final stages of the evolution of the most massive stars. At the last stages of its life, when such a star finishes burning its chemical elements, the core collapses and the star collapses. As a result of the collapse, if nothing can stop it, a black hole is created.