How long would it take for a Black hole to eat the Earth?

Question

a supermassive one and a mini black whole.. would it take hours? what would we see?

Bonus Question : How could scientists say stuff goes in black holes but doesnt come out if they have tried it? the closest black hole is in the middle of our galaxy and we havent reached that far..

Answer 1

Well, first of all, the small possible black hole weights already 5 sun masses.

Depends on where you see it - from the point of view of an outside observer, it will take a long time, for both black holes, as the time slows down close to the back hole.

For somebody on Earth, it will be a short and sudden death.

Earth will already be ripped into a long cloud of matter before it reaches the event horizon by the stronger gravity gradients. In both cases. But for the super massive black hole (around the size of Jupiter), it will happen at a further distance.

Answer 2

the black holes never eat any thing, but the dust present around them will eat the stars and planets.

Answer 3

A supermassive black hole could consume the Earth in seconds or even less. A smaller black hole would take longer, but keep in mind that if it's too small, it will explode before it ever has the chance to consume the Earth. I would say that a reasonable guess would be a few hours as the upper limit of the time it could take a black hole to consume the Earth, assuming that small black holes do in fact blow up due to Hawking radiation.

Answer 4

when something goes in a black hole it gets stretched and then disintegrated . even light gets sucked in thus the name black hole

i think within minutes earth will be gone

we would probably see everything getting stretched then black till u die of overstretching and/or disintegration

Answer 5

1 it realy depends how far away it is but scientists have done the math and predicted that earths accretion time would be 50 months probubly for both because a black hole has the most gravity possible regardless of size

Answer 6

If a black hole could exist a massive one would swallow the earth in a fraction of a second.

  One with the mass of the earth and about  .1 meter in diameter they would collide in a massive explosion.

  A black hole made up of a few atoms would sink to the center of the earth and devour it from within.

Answer 7

like a nanosec...

Answer 8

A mini black hole (not "whole") would never "eat" the Earth.

First of all, black holes do not "eat" matter.  BH are just stars that are so big that light can't escape.  But they don't "eat" things anymore than stars eat.  Matter _falls_ into a BH.

Second, a mini black hole evaporates very quickly -- within microseconds.  So matter does not have time to fall into it before it is destroyed.

Third, even if the black hole did not evaporate, a mini black hole is *very* small.  So small, that it has only the gravity of, for example, a large mountain.  You don't see large mountains "eating" up the Earth, and you wouldn't see a mini black hole "eating" up the Earth for the same reason -- they just don't have that much gravity.

Answer 9

As soon as any part of the Earth hits the event horizon of the black hole, it is sucked in instantaneously.

We wouldn't see anything, light wouldn't be reflecting off anything, since it too would be pulled into the singularity.

Bonus Answer:  It is the definition of a Black Hole!!! That is how they know.  If something was able to come back, then it wouldn't be a Black Hole.

And why do you think the closest is in the middle of our galaxy?  How do you know?  (BTW, The closest Black Hole is MUCH closer than that)

Answer 10

i guess it depends on how hungry it is! a black hole doesn't just come and eat the earth u know!

Answer 11

It depends on where your standing! outside the earth, it will start moving long before it even gets close, and in an instant, it will be gone. But on the earth? time will slow down, and it will take forever. some say if you can stay outside the event horizon, time will stretch forever for you. so....that sounds like fun....

Answer 12

junkie_360xb

The observer on the event horizon will not notice even if the object disintegrates or not (light cannot escape)

From the event horizon the observer sees no change in the object, though the object is changed

The black hole's gravity is so strong our atoms are stripped of their electrons and even split in protons and neutrons and even further.

How do you know that whatever is on the other side automatically reassembles everything broken up?

The Earth would be destroyed under the black hole's gravity