explain the formation in signification of black hole?
Answers
A black hole can be formed by the death of a massive star. When such a star has exhausted the internal thermonuclear fuels in its core at the end of its life, the core becomes unstable and gravitationally collapses inward upon itself, and the star's outer layers are blown away.
Explanation:
A collection of massive hydrogen atoms is what makes a star. In their core, hydrogen atoms fuse into helium, releasing a tremendous amount of energy. The liberated energy, in the form of radiation, pushes against gravity and maintains a delicate balance between the two forces. A star is stable enough as long as there is fusion in the core. In stars, much more massive than Sun, the heat and pressure at the core allow them to fuse into heavier elements until they form iron. Iron builds up in the centre of the core until it reaches a certain critical point, and suddenly, the balance between radiation and gravity is broken. This results in the core collapsing and imploding into itself. Moving at about the quarter of the speed of light, it feeds even more mass into the core. It is at this very moment that all the heavier elements in the Universe are formed. As the stars die in a supernova explosion, they either turn into a neutron star or a black hole depending on the mass of the star.
Types of Black Hole
There are four types of black holes as follows:
i) Stellar
ii) Intermediate
iii) Supermassive
iv) Miniature
The commonly known way of how a black hole is formed is by stellar death. As stars reach their end-stage of their lives, most will lose mass, will inflate and cool to create a white dwarf. But the largest of these, those ten times or 20 times more massive than Sun are destined to become either a super-dense neutron star or the stellar-mass black holes.