Can there be black holes inside black holes?

Question

1. How do we know we're not inside a black hole?
2. There are black holes within this universe.
3. Does that mean we can't be inside a black hole?
4. If not, then wouldn't that mean black holes can be inside black holes?

Answer 1

What is the escape velocity of the Universe? Is the Universe a "black hole"? Possibly. If it is, then for sure there can be black holes within black holes.

Answer 2

Well, it isn't that they are inside one another, but that they combine to make a bigger one. Because of the nature of a black hole we cannot be in one, it is basically where a super giant star supernovas, and the core of the star is what makes the black hole, the core of the star is so tightly compacted that a teaspoon of the material would weigh as much as the Earth. This makes for extremely high gravity, and, there are billions of black holes in the Universe, so i am assuming that question two is that we have black holes in our Galaxy, which is true, they believe there is a massive one in the center of the Milky Way,a nd most black holes do reside in the centers of all galaxies. That is to say we are not in a black hole, because not much is known about them, as the closest one to us is 30,000 light years away, they have some understanding but do not know all the answers. However, I think if we were in one it would be tearing the Sun apart, so we would be able to see the gas stream from the black hole pulling off the layers of gas from the Sun. Another reason is that there are not too many double stars, which would be close enough to both supernova at the same time to make two black holes within each others grasp, now this isn't to say that two colliding Galaxies may eventually end up with their black holes nearing each other, but the distance between stars is too great for this to happen.

Answer 3

A Black Hole is a spherical region (volume) of space surrounding a Singularity where the gravity of the Singularity is so strong that everything (including light) gets pulled down into the Singularity (hence the use of the term "Hole"); and nothing (not even light) can escape the gravitational pull of the Singularity (hence the use of the term "Black"). The distance from the Singularity where light cannot escape is called the Event Horizon. The Event Horizon defines the outer boundary of the Black Hole. A Singularity is a point in space with no volume and infinite density. It is formed from the collapse of a giant star (many times the mass of our own Sun). The gravity of this star is so strong that the collapse continues past the point of maximum atomic density (protons, neutrons, and electrons touching) to a point of no volume and infinite density. The reason the gravity of the Black Hole at and inside the Event Horizon is so strong is because it is so close to the mass of the Singularity. And, as you know, the closer you get to the center of mass of an object, the stronger the gravitational pull of that object. The diameter of a lower-end Super-Massive Black Hole (100,000 times the mass of our own Sun) is about 190,000 miles. Less than the distance from the Earth to the Moon. The Super-Massive Black Hole at the center of our Milky Way Galaxy could fit between the Earth and the Sun. .

Answer 4

No! If black holes could exist once you penetrated the event horizon you would have to exceed the speed of light.
Since the escape velocity on the surface of a black hole is "C" the second [interior]black hole would have to have an escape velocity greater than "C",which cannot be!

Answer 5

The black hole mystery is immense.. No one knows for sure ANYTHING about the black holes so to answer your question is just not possible.. Yes, some might have theories but there is NOTHING.. absolutely NOTHING absolute with anything concerning the black holes

Answer 6

black hole
An object with a gravitational field so strong that light cannot escape from it. It is believed to be created in the collapse of a very massive star.

We know that earth is not a black hole because it can be seen from outer space.
I guess that astronomers detect the intense gravitational field zeroing in in a particular area.