The discovery of black holes in the Milky Way is considered one of the greatest achievements of modern science. The largest black hole considered to be super-massive was called Sagittarius A and has a mass 15 times larger than that of the Sun.

A black hole accumulates huge amounts of interstellar material. However, the ejected matter is very small and difficult to detect. To make detection easier, scientists are working on a powerful measurement system, called the Square Kilometre Array, which will be the best performing radio telescope in the world and will be able to measure the emission of material ejected from 700 black holes.

According to estimates, in the Milky Way there are over 100 million black holes. The estimate is based on the fact that our galaxy formed 15 billion years ago, and in the last period alone, 20,000 stellar explosions occurred.

The Milky Way has a length of 100,000 light years and a width of 1000 light years. The closest black hole to Earth is at a distance of 3000 light years and has a mass 19 times larger than that of the Sun.

Black holes are massive cosmic events, and their formation is less known due to the production of an extremely large gravitational attraction, so that no light can escape. In these conditions, studying them is very difficult.

A black hole swallows planets, stars and other cosmic objects. Following the swallowing phenomenon, enormous amounts of energy called quasars are released.


While stellar black holes have a larger mass than the Sun several times, super massive black holes are millions or billions times larger. The stellar black holes are formed by massive stars that end when hydrogen is consumed. In the absence of hydrogen, combustion is maintained by other elements that will form a massive iron core.

Under these conditions, the star has two possibilities. When the nucleus reaches the critical phase, the star dies, sinking into itself, then explodes outside and forms a supernova or completely submerges and forms a black hole.

As for the formation of super-massive black holes, there are many unknowns. While some specialists claim that they were made up of giant gas clouds, others believe it is black holes that develop over time.

In recent years, specialists have launched the theory that in every black hole there is a universe. The universe formed from a hot and dense point called singularity. As it forms, a black hole engulfs more and more matter and energy, creating within it a true universe. There are specialists who believe that the created universe would have four or more dimensions.

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