The person would experience spaghettification, and most likely not survive being stretched into a long, thin noodlelike shape. In other words, if the person is falling feet first, as they approach the event horizon of a stellar mass black hole, the gravitational pull on their feet will be exponentially larger compared to the black hole’s tug on their head.
#Have we ever sent something into a black hole free
This implies, due to the closeness of the black hole’s center, that the black hole’s pull on a person will differ by a factor of 1,000 billion times between head and toe, depending on which is leading the free fall. Thus, someone falling into a stellar-size black hole will get much, much closer to the black hole’s center before passing the event horizon, as opposed to falling into a supermassive black hole. The supermassive black hole at the center of our Milky Way galaxy, by contrast, has a mass of roughly 4 million solar masses, and it has an event horizon with a radius of 7.3 million miles or 17 solar radii. For a black hole with a mass of our Sun (one solar mass), the event horizon will have a radius of just under 2 miles. The radial size of the event horizon depends on the mass of the respective black hole and is key for a person to survive falling into one. Even light, the fastest-moving thing in our universe, cannot escape – hence the term “black hole.” Anything that passes this point will be swallowed by the black hole and forever vanish from our known universe.Īt the event horizon, the black hole’s gravity is so powerful that no amount of mechanical force can overcome or counteract it. The event horizon of a black hole is the point of no return. The second type is a supermassive black hole, with a mass of millions to even billions times greater than that of our Sun.īesides the mass difference between these two types of black holes, what also differentiates them is the distance from their center to their “event horizon” – a measure called radial distance. The first does not rotate, is electrically neutral – that is, not positively or negatively charged – and has the mass of our Sun. There are two types of black holes that are relevant to our discussion. They can vary by size and be electrically charged, the same way electrons or protons are in atoms. The universe is littered with a vast zoo of different types of black holes.
They probably had an impact on the formation of human life in our own galaxy. These intriguing objects appear to be an essential ingredient in the evolution of the universe, from the Big Bang till present day. Black holes are among the most abundant astrophysical objects in our universe. We are both physicists who study black holes, albeit from a very safe distance. However, there is a rather complicated catch: A human can do this only if the respective black hole is supermassive and isolated, and if the person entering the black hole does not expect to report the findings to anyone in the entire universe. To solve the mysteries of black holes, a human should just venture into one. Pulkeet, age 12, Bahadurgarh, Haryana, India Could a human enter a black hole to study it?
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