In the twentieth century, many discoveries were made about space bodies and phenomena in the universe. Stephen Hawking's discovery of black holes. A star that has used up all its energy begins to shrink inward. As a result of this compression, a powerful gravitational field with an infinitely high density and a mass close to zero is formed in the place of the star. This area is called a "black hole" in astronomy. Black holes cannot be seen even with the most powerful telescopes. Because they absorb photons. As a result, it loses the light that can be perceived by the human eye and does not reflect them at all. The presence of a black hole can be determined by the extremely strong magnetic field created around it.

Gravitation, theory of relativity, gravity

Stephen Hawking. The Universe ina Nutshell by. London-Bantam November 2001. 148-b.

Stephen Hawking. The Future of the Universe. Engineering & Science journal /Fall-1991 . 31-b.

Stephen Hawking. The Big Bang and God. USA Georgia. University of Georgia Athens-2004. 74-b.

Stephen Hawking. A brife history of time. London. Universe. 1994 year. 179-b.

Stephen Hawking. The grand design. New York. Art copyright. 2010 year. 85-b.

Стивен Хокинг. Теория всего. Москва; АСТ. 2018. 70-b.