Many of the curious minds of the Science Daily Online team agree to ask us the same question: What could happen to me and everything around me, if a black hole suddenly appears next to Earth, even if it were size of a coin ? The short answer would be that you and everyone around you would die instantly.The long answer is a bit more complex to explain.We will try to reveal the incognita.
What would happen if a black hole appeared next to the Earth?
The answer to this question is different if, when you refer to a black hole in the size of a coin, you do so by referring to its mass or, instead, you mean its radius since they are really very different things.
Let's start from the equation that defines a black hole:
Radius=2 (Gravitational constant) (Mass)/(Speed of light) ^ 2
We are going to take as an example a US 5 cents coin, a nickel, since it weighs exactly 5 grams.Let's imagine that you carry a 5 cents coin in your pocket and suddenly this mone da becomes a black hole.This black hole would have a radius of 10 to 30 meters.Let us bear in mind that an atom is approximately 10-10 meters.If the atoms were made of atoms, this black hole would be of the size of the micro-atom that composes the milli-atoms that make up the real atoms.Basically, it is unimaginably small.
A black hole of that small size would have an incredibly short lifespan that would decay from Hawking's radiation: it would radiate the little mass it has in 10-23 seconds.These 5 grams of mass will become 450 teraJoules of energy, which is comparable to the detonation of approximately 100,000 tons of TNT, and there would be an explosion three times greater than the atomic bombs dropped on Hiroshima and Nagasaki together . Obviously, in this case, you would die.
But if the black hole next to the Earth has the radius of a common currency, in that case, it will be much more massive.If we go back to the example of the 5 cents coin, we will take into account that it has a ratio of approximately 10 mm.This black hole next to the Earth, has a mass of 10 24 kilograms, a little larger than the mass of the earth.Its surface gravity is one billion billion times greater than Earth's.So if it were in your pocket, you would be attracted to the black hole at dizzying speeds, but not figuratively, literally dizzying.
If you used to watch science fiction movies, you would surely believe that the black hole it will sink towards the center of the Earth and consume the planet from the inside out, but in reality the Earth would also move towards that black hole and begin to move as if it were orbiting around it, as it would devour pieces of mass at each pass.
Most of the Earth would be consumed after a while and leave a scattered disk of hot dust and rocks in an orbit where the planet once stood.The black hole would grow and, with time, its mass would double.
The consequences for the system so Lar would be terrifying.The black hole tidal forces would break the asteroid belt, sending rocks at full speed through the solar system, so bombardments and impacts of cosmic material would become somewhat common in the next million years.
The rest of the planets, although a little disturbed by the events, would continue to belong to the same orbit and the black hole that would now occupy the place occupied by the ancient Earth, orbital around the Sun.
In any of the cases mentioned, your destiny is always the same, you would die.Fortunately, black holes do not form spontaneously.They are formed from the remains of a large star that dies in an explosion, a supernova.some black holes that do not require a supernova to form.Some larger black holes may result from stellar collisions.Shortly after its launch in December 2004, NASA's Swift telescope observed the powerful and fleeting flashes of light, known as gamma-ray bursts.The Hubble Space Telescope of Chandra and NASA later collected the “residual glow” of the event.By observing the data, astronomers concluded that powerful explosions could occur when a black hole and a neutron star collided, producing, in turn, another black hole./p>
With all these data that we have explained to you, what do you think of a black hole appearing next to the Earth? What do you think of the world of astronomy? Are you interested It is a fascinating world full of mysteries and unknowns.Give us your point of view, we will be happy to read you!
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