A few physicists have suggested the exact set of conditions required for a human to go into a black hole, but note that this would be the loneliest one-way ever in the history of mankind.
For the purposes of their proposal, Leo and Shanshan Rodriquez, both assistant professors of physics at Grinnell College, compare two types of black holes: star size, about the same mass as our sun, and supermassive, with a mass millions or even billions of times larger.
The former does not turn, with a radius of the event horizon of about 3 km (3.2 km). The event horizon is the point of no return where the gravitational or tidal forces of the black hole become so powerful that not even light can escape.
In contrast, supermassive black holes such as the middle of the galaxy can measure up to four million solar masses, with a radius of 7.3 million miles.
In the case of a star-sized black hole, the event horizon is much closer to its center than a supermassive black hole, which means that the difference in terms of gravity between the event horizon and its center is somewhere around 1000 billion . stop.
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If a person were to cross the horizon of a black hole, they would undergo a process known as spaghettiification, in which all the atoms of their body would be stretched into a long thing, given the extraordinary difference in gravity. from one point in space time to the next. It is very likely that this fearless astronaut would kill this process.
However, a person falling into a supermassive black hole will experience a much more gradual and prolonged free fall without the unsightly spaghettiification, and go through the event horizon, regardless of the extreme differences in gravity, given the staggering distances.
Another obstacle, however, stands in the way of this extreme freefall; most black holes have extremely hot growth disks of superheated material torn from the universe around them that are crushed on their doorstep.
In order to “safe” entering a supermassive black hole, it would have to be isolated from the universe around it, after chopping down planets, gas and stars around it long before the intrepid astronaut ventured into the event horizon.
Unfortunately, the survival of the journey along the horizon of events is the most lonely and personal journey ever undertaken, as no information can possibly escape the black hole, given the above gravity which the light itself cannot escape.
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