How does a black hole form?

Form a black hole

It is believed that primordial black holes were formed at the beginning of the universe, that is, immediately after the occurrence of the Big Bang. Stellar black holes are formed when the center of a massive star collapses in on itself, after the star has exhausted the internal thermonuclear fuel in its center. This exhaustion leads to... The instability of the center of the star, the collapse of gravity inside it on itself, and the explosion of its outer layers, then the crushing weight of the constituent matter emerging from all sides of the star presses on the dying star until its volume becomes zero and its density is infinite, known as the “singularity.” This collapse also causes a massive supernova explosion. It is known as a “supernova” or causes a star to explode and scatter its parts in space. Scientists believe that massive black holes were formed at the same time as the galaxy, and therefore the size of these massive black holes is related to the size and mass of the galaxy in which they are located.

Definition of black hole

A black hole is a region in space where the force of gravitational pull is very high and does not allow light to pass through it. Therefore, it is invisible and it is possible to find it through the use of a space telescope and special devices. The English geologist John Michell and the French astronomer have done this. Pierre-Simon Laplace developed the idea of ​​black holes in the eighteenth century, and they developed a theory that: If a celestial body is large enough and has sufficient density, it will lead to the appearance of such a high gravity that nothing can escape its pull.

Types of black holes

Black holes exist in three main types based on mass and size:

• Small black holes: Known as primordial black holes, scientists believe that the size of this type of hole is the size of a single atom, but its mass is the mass of a large mountain.
• Average size black holes: It is the most common, and its mass is about 20 times greater than the mass of the Sun.
• Large black holes: Known as supermassive black holes, these black holes contain masses greater than a million suns placed inside a sphere the size of the solar system.