A new study suggests that there may be “very large black holes” or SLABs for a short period of time, even larger than the supermassive black holes already observed in the centers of galaxies.
Black holes are one of the most abundant objects in the universe, the most mysterious, and the most deadly as well. A person has to enter one It could mean an endless tearing of the flesh, a very slow death.
But two physicists from Grenell College set out to study how a person could venture into a black hole. And although he could not tell the experience, at least he was able to survive and discover what was hidden on the other side.
The first thing the teachers explain Leo Rodriguez and Shanshan Rodriguez believe that for this to be possible, a black hole must be extremely massive and isolated. And if a person entered, he would not be able to get out again or communicate with anyone on the same side of the universe.
A person falls into a black hole and expands. (Liu Rodriguez / Shanshan Rodriguez / CC BY-ND)
Black holes, in addition to being very common, are essential in the evolution of the universe, from the Big Bang to the present, and may have had an effect on the formation of human life in our galaxy.
But the universe is filled with different types of these black holes, as in a kind of intergalactic zoo. They can vary in size and electrical charge, similar to what happens with electrons and protons in atoms. There are other types of black holes already spinning, but there are two types of black holes related to this debate.
“The first type does not rotate, it is electrically neutral, that is, it has neither positive nor negative charge, and it has the mass of our sun. The second type is a supermassive black hole, with a mass of millions to billions times greater than our sun. Experts write.A person who falls into a supermassive black hole is likely to survive. (Liu and Shanshan Rodriguez / CC BY-ND)
In addition to mass, the two types of black holes are distinguished by the distance from their center to the “event horizon,” a measure called the radial distance.
The event horizon of a black hole is a point of no return. Everything that passes through this point will be swallowed up by the black hole and will forever disappear from our known universe.
On the event horizon, the black hole’s gravitational pull is so strong that no mechanical force can overcome or counteract it. Even light, which is the fastest moving thing in our world, cannot escape, hence the term “black hole”.Representation of a black hole (NASA)
The radial size of the event horizon depends on the mass of the black hole in question and is the key to a person’s survival by falling into one. For a black hole of the mass of our Sun (solar mass), the radius of the event horizon would be just under 2 miles (3.2 km).
At the center of our galaxy, the Milky Way, is a supermassive black hole of about 4 million solar masses, and an event horizon with a radius of 7.3 million miles or 17 solar radii.
Therefore, a person who falls into a black hole the size of a star will get much closer to the center of the black hole before exceeding the event horizon, rather than falling into a supermassive black hole.
This means, due to the proximity of the center of the black hole, that A black hole’s clouds will vary for anyone by a factor of 1,000 trillion times between head and foot. Depending on the person driving the freefall.A person approaching the event horizon of a sun-sized black hole (Leo and Shanshan Rodríguez / CC BY-ND)
In other words, if a person lands on their feet first, when approaching the event horizon of a stellar-mass black hole, the force of gravity at its feet would be significantly greater compared to the black hole’s pull on its head.
“A person will experience spaghetti and likely not survive by stretching into a long, thin shape that resembles spaghetti,” They explain.
But if a person fell into a very massive crater, the event horizon would be too far from the central source, so it would be reached in a longer time. This means that the difference in gravity between head and feet will be nearly zero.
“Thus, the person will pass the event horizon unaffected, will not extend to long, thin noodles, will survive, and will float without pain beyond the horizon of the black hole,” They add.
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Another aspect to bear in mind is that most black holes are surrounded by a disk of extremely hot matter, which is mostly made of gas, dust, or other things like stars and planets that have come too close to the event horizon and fall into a black hole.
These are called accumulation discs and are very hot and chapped. It is certainly not hospitable and would make traveling to a black hole extremely dangerous.Plasma near the event horizon is about to be consumed by a spinning black hole
“To enter safely, you would need to find a supermassive black hole that is completely isolated and not feeding on surrounding material, gas, or even stars.” stand out.
They add that: “If someone finds an isolated supermassive black hole suitable for scientific study and decides to venture into it, everything that is observed or measured inside the black hole will be confined to the event horizon of the black hole.”
But nothing can escape the gravitational pull beyond the event horizon, so this amazing adventure cannot be shared with anyone, and the information and results will be the exclusive knowledge of the lucky person who, perhaps, in theory at least, will survive the experience.
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