Is Black Hole Exits or Not? & It’s Mysterious Facts
If we are talking about black holes, it’s beyond what we think. As a kid, I always thought about how black holes work and how it looks, but my curiosity to know about them has slowed day by day. Because I don’t have any person whom I can talk to about this thing, but I am now writing about this. Maybe I can get more information about this, so firstly, what is a black hole?
It is a place in a galaxy or in space where the gravity is so strong that not even light can pass through it, or even nothing can pass. Scientists often represent it as a black circular shape surrounded by a bright glowing ring of blue, orange, or other colours, similar to the famous images seen online and on Google searches.
How Did it Form?
A Black Hole is Formed: When a very massive or, we can say, big stars collapse after an explosion between two or more stars, it can form into a black hole.
Now Event Horizon: This is called the “point of no return”. When something is around there or crosses it, it never comes back.
Accretion Disk: This is a glowing ring of gas with dust spinning around the black hole. It gets super-hot and also too bright.
One of the important things that I thought about, that is the time around black holes. Timing around black holes is slow if anything is:-
- Far away from a black hole, time runs normally or as usual
- When closer to it, time becomes slower
- When anything is at the edge, time almost stops
This type of effect is known as Gravitational Time Dilation.
Example of Gravitational Time Dilation Effect: Imagine a person whose name is Rohan, who is staying on Earth. He decided to go near a black hole, and then he went there. When he came back home from the black hole, his friend might have aged 10 years, but Rohan aged only 1 year.
Intersecting Fact:
- There is a movie named Interstellar about a planet near a black hole, where 1 = 7 years on earth. This movie is not based on a real incident; it is only an imaginative kind of movie.
- That shows the effect of gravitational time dilation in the movie.
- In reality, you wouldn’t actually survive that close due to extreme gravity, but the timing effect in the movie is totally or 100% real. One more thing is that there are millions or trillions of black holes that exist in our universe; some are known, and some are hidden.
- Talking about some theory: based on Einstein’s theory of general relativity, that’s talk about the complete collapse of stars from infinite density.
- Most of the people said that inside the black hole, there is another universe or another version of us, like there is one more earth just like our earth and us living there, but we don’t know about or even they don’t know about us, but it’s just the imagination of humans because no one goes inside there.
Types of Black Holes:
- Stellar Black Holes
- Form from dead stars
- Mass: 5-100 times our sun
- Supermassive Black Holes
- Found at galaxy centres
- Millions to billions times the sun’s mass
- This type of black hole is present in our Milky Way galaxy name of that black hole is [Sagittarius A]
- Intermediate Black Holes
- It’s rare or still being studied
- Primordial Black Holes
- It’s theoretical from the early universe
There will be more types of black holes that have not been discovered yet; maybe in future there will be more types.
By the estimate of scientists in the Milky Way galaxy, there are 100 million to 1 billion black holes. The first real image was captured in 2019 by the Event Horizon Telescope. It showed the shadow of a supermassive black hole in galaxy M87. Scientists can’t see them directly. They detect by their effect.
This image is blurred. It is because of its composite made from radio telescope data, and the resolution is limited by how faint the signal is.
Is a black hole dangerous to Earth or not????
No, don’t worry, there is no black hole close enough to harm Earth. Closet enough is very far from Earth, and it’s safe and not harmful. Also, black holes are not completely black according to Hawking radiation.
Can Black Holes Die?
Yes. According to Stephen Hawking, black holes slowly lose energy through the process of Hawking radiation. So, that’s all for black holes. This is short information about it; black holes have more things to know about.
