Where does the matter from black holes disappear to?

Question

If gravity pulls matter so hard that light can't escape, it must be traveling at the speed of light somewhere else because of a difference in pressure, right?

Think of our universe as a balloon that's got a slow leak (black hole). It's known that our universe is expanding, so there must be something that's keeping matter in our balloon and inflating it but at the same time still allowing slow leaks to escape, right?

I think a hot air balloon may explain this. When heat is introduced, the balloon fills up with hot air and it expands, and in order to keep the balloon afloat, constant heat must be added.

Well, Stars are a constant source of heat, and although their heat may struggle to reach out of our solar system, trillions of stars could produce enough heat to make our universe expand and compensate for the leak. So if what-ever is outside of our universe, must be either colder or have less matter(diffusion).
Can someone chime in on this?

Answer 1

Black holes are a simple concept. Matter goes in, and stays there. It leaves extremely slowly, as Hawking Radiation. Eventually the entire universe will be black holes, as stars run out of energy (they are not continuous, constant source of heat) and become, or get sucked in to, a black hole.
Eventually, these black holes will dissipate as Hawking radiation, leaving the universe as a evenly dispersed volume of energy at just above absolute zero.

There is nothing outside our universe, other than as mathematical concepts. And nothing to imply that our universe could interact with it, in any case.

Answer 2

you make no sense at all. the matter that goes into a black hole simply adds to the mass of the singularity. i dont understand what u mean by "traveling at the speed of light somewhere else because of pressure". i dont not understand that, hence it makes no sense. and yes there is something driving the expansion of the universe, dark energy. that whole hot air balloon idea would only work if space were filled with alot of atoms. the only reason balloon would expand when heated is because the atoms are moving faster. in space there are no atoms, so that theory is not right. dark energy is driving the expansion of the universe, not heat. if it were heat then the temperature of space would be alot more than -270.3 degrees C.

Answer 3

A balck hole is not a "leak" in the universe. The matter doesn't "go" anywhere; it sits at the singularity in the middle of the hole. Your hot-air-balloon universe mode is wrong. The universe is not expanding because of the stars' heat, which, cosmologically, is completely negligible.

Answer 4

A black hole is a region of space in which the gravitational field is so powerful that nothing can escape after having fallen past the event horizon. The name comes from the fact that even electromagnetic radiation (e.g. light) is unable to escape, rendering the interior invisible. However, black holes can be detected if they interact with matter outside the event horizon, for example by drawing in gas from an orbiting star. The gas spirals inward, heating up to very high temperatures and emitting large amounts of radiation in the process.[2][3][4]

While the idea of an object with gravity strong enough to prevent light from escaping was proposed in the 18th century, black holes as presently understood are described by Einstein's theory of general relativity, developed in 1916. This theory predicts that when a large enough amount of mass is present within a sufficiently small region of space, all paths through space are warped inwards towards the center of the volume, forcing all matter and radiation to fall inward.

While general relativity describes a black hole as a region of empty space with a pointlike singularity at the center and an event horizon at the outer edge, the description changes when the effects of quantum mechanics are taken into account. Research on this subject indicates that, rather than holding captured matter forever, black holes may slowly leak a form of thermal energy called Hawking radiation.[5][6][7] However, the final, correct description of black holes, requiring a theory of quantum gravity, is unknown.

General relativity describes mass as changing the shape of spacetime, and the shape of spacetime as describing how matter moves through space. For objects much less dense than black holes, this results in something similar to Newton's laws of gravity: objects with mass attract each other, but it's possible to define an escape velocity which allows a test object to leave the gravitational field of any large object. For objects as dense as black holes, this stops being the case. The effort required to leave the hole becomes infinite, with no escape velocity defined.

There are several ways of describing the situation that causes escape to be impossible. The difference between these descriptions is how space and time coordinates are drawn on spacetime (the choice of coordinates depends on the choice of observation point and on additional definitions used). One common description, based on the Schwarzschild description of black holes, is to consider the time axis in spacetime to point inwards towards the center of the black hole once the horizon is crossed.[8] Under these conditions, falling further into the hole is as inevitable as moving forward in time. A related description is to consider the future light cone of a test object near the hole (all possible paths the object or anything emitted by it could take, limited by the speed of light). As the object approaches the event horizon at the boundary of the black hole, the future light cone tilts inwards towards the horizon. When the test object passes the horizon, the cone tilts completely inward, and all possible paths lead into the hole.[9]

Answer 5

I have a feeling that what really happens to matter that falls into a black hole may not yet be understood. It's clearly something very extreme and outside our experience. Any time a theory spits out infinities one should be wary. Maybe something totally new and unimagined is going on in there...

Answer 6

What goes on inside a black hole is at this time undefined. All proposals are simply conjectures.

Answer 7

meh, scientists hve a theory tht the matter tht goes through black holes comes out through a "white hole" sumwhere else in the universe