What is Black Hole and Types of Black Hole?

A big star’s gravitational collapse occurs as it approaches the end of its life cycle, creating the mysterious and intriguing black hole.

A more thorough description of black holes is provided below:


Massive stellar remnants give rise to black holes. Such a star can no longer withstand the pressure created by nuclear fusion once its nuclear fuel runs out. The star’s core might shrink as a result of this pressure loss as a result of gravity.

Core Failure:

The huge star’s core warms up and becomes denser as it compresses. Gravity eventually triumphs over other forces, causing the core to collapse in on itself if the core’s mass rises to a critical level (about 20 times the mass of our sun).

Events to come:

The core continues to collapse until it transforms into a singularity, a point of infinite density that is bound by the event horizon. The event horizon is a crucial line beyond which nothing, not even light, can escape detection. Anything that crosses this line is inevitably pulled in the direction of the singularity.


Several essential characteristics define black holes:

Black holes have a singularity at which all of their mass is concentrated.

Singularity: the black hole’s nucleus, a point of infinite density.

Event Horizon: The line beyond which nothing is possible to survive

The “No Hair Theorem” states that black holes may be defined by only three characteristics: mass, charge, and angular momentum.

Different kinds of black holes:

Stellar-Mass Black Holes: These are formed from the remains of big stars and generally have masses that range from a few to tens of times that of the Sun.

Intermediate mass Black Holes: Black holes of intermediate mass have masses that fall between stellar and supermassive black holes (thousands to millions of times the mass of the Sun).

Supermassive Black Holes: These black holes, which are located in the galactic cores, have millions to billions of times the mass of the Sun.


By examining the materials and radiation that fall into black holes or by observing their gravitational effects on neighboring objects, black holes are often indirectly discovered. Occasionally, X-ray radiation from accretion disks (stuff spiraling towards the black hole) may be used to identify stellar-mass black holes.

Recent Studies

To learn more about black holes’ characteristics and cosmic significance, scientists are still researching them. In 2019, the Event Horizon Telescope, for instance, obtained the first picture of a supermassive black hole’s event horizon in the galaxy M87, giving compelling proof of the existence of black holes.

Black holes are one of the most puzzling and fascinating phenomena in astronomy and cosmology, and they are still a topic of ongoing investigation. They have a significant impact on their surroundings and are essential in determining how the cosmos is structured.

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