Excuse me, people will die when they enter a black hole, who brought it up first?

Albert Einstein....The theory of relativity....The mass of the black hole is large enough to capture the light, the light cannot escape, the gravity is obvious, and at the same time it is distorted in the plane of space-time.

Black holes "are just a natural spectacle in space, and they may only be observed through satellites in space, radio telescopes on the ground, and some equipment at astronomical observatories." There is still a long way to go. Satellite observation through cameras is currently the safest way.

A person who falls into a black hole will die. The probability of a living person falling into a black hole is almost zero, and the body of a person who falls into a black hole will eventually be pulled by tidal forces, infinitely pulled, imagined as a rubber band, and if it is pulled infinitely, it will become infinitely thin, and in this case the person will definitely die. Falling into a black hole is like falling into a blender that converts human flesh into energy, but this blender will leak energy, and the leaked energy will form matter again, and humans may appear again.

The horror of black holesBlack holes are arguably one of the most mysterious celestial bodies, and their gravitational pull is so strong that even the surrounding space-time is bent, and no object can escape its gravitational range, not even light.

Therefore, a black hole can only be found in indirect ways, for example, when we observe a distant celestial body, we can find that it is moving around an invisible gravitational source, or when it is devouring the accretion disk generated by another star, we can say that it is like a vortex in a river, as long as you get close, it will be swallowed by strong suction, so the escape speed of the black hole exceeds the speed of light.

A black hole sucks a person into it and dies.

If your friend sees you fall into a black hole, first your friend will see you turn red, from light to dark, and then you will fade away, and you will be sucked into the black hole.

At first you don't feel uncomfortable, you just feel scared because it's pitch black, you can't see your hands, you feel very heavy, and then you feel weakness and pain in your limbs because your limbs are being pulled by a huge gravitational pull. The limbs are detached and broken because you are torn and stretched by the black hole.

The horror of black holes.

Suppose a black hole is stellar, and as you get closer to the horizon of the black hole, the gravitational pull on you becomes stronger and stronger, and you will fall at an accelerated rate. During this process, the person who falls towards the black hole will not see anything within the event horizon, but the celestial bodies and light above his head will be distorted and constantly spin overhead.

However, the person will not be able to see what he sees when he passes through the horizon, and he will be pulled to pieces when he enters the horizon. Because when the observer is close enough to the event horizon, the tidal effect of the black hole on him is extremely strong.

Black holes are one of the most mysterious celestial bodies in the universe, and it is well known that black holes in the universe devour all the matter around them, and even the fastest light cannot escape the "clutches" of black holes. So far, no one has dared to risk their lives to go to a black hole, and so far no humans have ever entered a black hole.

"Black hole", this star has an almost infinite density and considerable gravitational pull. Within the horizon of a black hole, neither the escape velocity of light nor the electromagnetic waves can escape its enormous gravitational pull.

First, let's talk about the concept of time near and inside a black hole. The more inward a black hole is, the slower time becomes.

According to the general theory of relativity, space-time will bend under the action of the gravitational field, and we on Earth, because the gravitational field has a small effect, the distortion of space-time is basically non-existent.

Therefore, space-time around the black hole is bent by the gravitational field, and the closer you get to the center of the black hole (the singularity), the gravitational pull is greater. As we go deeper into the black hole, space-time becomes more distorted until we reach the singularity of the black hole, where the distortion of space-time reaches infinity, at which point space and time no longer make sense, and all the laws of physics based on the concepts of time and space as we know them will become invalid.

If humanity is sucked up by a black hole.

Before being sucked into a black hole.

Any object has been torn apart, so that a person is stretched and torn apart before entering the event horizon of a black hole. From the outside world, it seems that due to the gravitational redshift, he will fall towards the event horizon in a slower and more slow, never-ending process, and at the same time, the wavelength of the photon will also be stretched due to the gravitational redshift, and we will theoretically be unable to observe what is happening there when we get close to the event horizon.

Suppose humanity enters the singularity.

If humans really enter the singularity of a black hole and are not torn apart by strong gravity, there are currently three possibilities after being sucked into the singularity.

1.Perhaps into a parallel universe (into a higher dimension of space).

2.Or travel through time to the future (it seems that time inside a black hole stops from the outside, so it comes out shortly after entering the black hole, but on the outside world it has been at least a few decades).

3.There is also the possibility of being "spit out" from another white hole.

Black holes may lead to four-dimensional or five-dimensional worlds or parallel worlds of higher dimensions, or they may cross time to the future, and many more possibilities.