What happens if a blackhole 1 inch in diameter pass by the earth? What if it fall on earth?

Question

A series of horrible events should take place after this pea size object gets near earth, or when it fall on earth. Yet I wonder what really happens in this case?

How many small black holes could be found in a diameter of 1-2 light years around us?

Answer 1

A black hole with event horizon that size would actually weight more than the Earth, so long before it actually came into contact, it would start destroying the planet from tidal effect if it was to get close enough. After the Earth is crushed, however, only a tiny portion of it would likely have the time to fall in, the rest would start spinning around it in a ring (and then would progressively fall in).
The effect that a passing black hole of that mass would have is entirely dependent on how close it would get. That ranges from "not even noticing it at all" (several astronomical units) to "orbit perturbations" (a few astronomical units) to "castastrophic orbit perturbation" (i.e the Earth orbit is shifted so that life becomes impossible) to complete destruction of the planet.

Doing the calculations of those distances would be quite time consuming, so I will not do them.

As to how many black holes of that size there are in the couple of light years around out solar system, the answer is most likely pretty close to zero. A black hole forms when a star 1.4 times as heavy as our sun collapse after going super nova, there are no known mechanism to make black holes smaller than that, and if there were from a time where mechanism existed to do so, Stephen Hawking has deducted that they would not be stable and would "evaporate", although hypothetical primordial black holes would not have had the time to completely evaporate given the present age of the universe.

Answer 2

It would create a binomial system where earth and the black hole would orbit space rotating around each other. The black hole would start to "bit" matter from earth bit by bit untill it would "chew" the whole earth and it would direct it inside itself. However, the black hole falling on earth would not happen so.

Answer 3

A black hole that size would have 1.43 times Earth's mass, so Earth would be deflected from its path more than the black hole would.

M(earth) = 5.974E+24 kg

M(black hole) = R c^2 / (2G)
M(black hole) = (6.7343E+26 kg/m) R
M(black hole) = (112.73 Earth masses) R

If it came anywhere near Earth, Earth would be disrupted by the tidal forces of the black hole. The crust would probably melt, for example. And a stream of matter would spin up, off of Earth, and be swallowed into the black hole.

Answer 4

To start, blackholes do not move. And the earth would fall on it and be crushed to less than a billionth of the blackholes size. If there was a blackhole that close to the earth, there would be no earth. By the way, the smaller the blackhole, the denser the star, the greater the gravity, the stronger the pull.

Answer 5

Black holes are not wandering through the universe.it is in the center of our galaxies . It furnishes the gravity that holds everything in its orbit. U can see a black hole coming from light years away not that u see it but everything around it.

Answer 6

It would be more likely to suck the Earth in than fall to Earth.

Answer 7

1) The Earth would cease to exist.
2) none.

Answer 8

All life as we know it will vanish regardless on the size of the black hole.

Answer 9

It would be called Washington D.C.!

Answer 10

IDK how to explain it but every thing that once existed before the Big Bang was the Size of a pencil Point