What Is A Black Hole? What Happens When Things Go In It?

Question

can the earth go threw one? and will that take us back in time

Answer 1

Some odd answers here. First, a black hole is not a magnetic field but a gravitational one. It's the result of a supermassive star collapsing upon itself. Second, there is usually a disc associated with a black hole called an accretion disc. They are ususally the material from a "companion" star that is being ripped apart and shredded by the tidal forcesof the black hole. As the material draws near the hole itself, often great bursts or beams of high energy particles escape in a perpendicular beam (usually of xrays). If the beam is oriented to us it will be extremely bright in the xray spectrum and will be visible across the universe.


Nobody is sure what can happen as something enters a black hole because the laws of physics break down at the point of a singularity. Some have postulated that if a black hole is spinning rapidly, objects can go through what called an Einstein-Rosen bridge. Nobody know if this bridge exits in this universe or in some completely different one, or if it's our universe in a different time. Communication would be impossible so even if you tried an experiment you'd never know the outcome.

Answer 2

I am sure you have a good tutorial on black holes and how they come to be.
Consider this; all celestial bodies have surface orbital speeds and the mass and gravity is concentrated at the center.
The surface orbital speed of the earth is 25,000 mph.Escape speed is more.
If you orbit a satellite above the surface you must slow it down or it will spiral away.
if you dig a tunnel below the surface around the earth and launch a satellite in it orbital speed would be reduced due to the mass and gravity between the tunnel and the surface.
If you slow it down it crashes into the floor if you speed it up it crashes into the top. This scenario is the same for all celestial bodies,except black holes.
If you penetrate the surface of a black hole the mass and gravity is still concentrated at the center.
A satellite orbiting below the surface would clearly have to exceed the speed of light.
Either the generally accepted theories of a black hole are wrong or black hole does not exist!

Answer 3

Matter as we know it exists because forces such as the electromagnetic force and others keep the subatomic particles apart, while gravity constantly pulls them together. These create a balance which allows subatomic structures to retain their shape and structures. In extreme circumstances, however, if there is enough matter in a small enough space, gravity ends up winning, and the matter collapses: electrons cannot stay distant from the atomic nucleus, and incredibly dense matter forms (sometimes called neutronium). Eventually, even this dense matter cannot maintain its structure and collapses into itself further. In a way that can be hard to imagine, nothing can stop this collapse if enough matter gets into a small enough space, and the matter collapses to a point of zero height, width, and depth, known as a singularity, in which the matter is so dense it is no longer "matter" in any real sense, but some kind of anomaly in space. Anything that gets too close to this singularity will also collapse into it the same way, whether it is matter, energy or even light itself, which is the fastest thing in the universe. The failure of even light to escape its gravitation is how the phenomenon initially acquired the name black hole.

Because matter and energy which passes this "boundary" can never escape back again, observers outside this invisible "boundary" cannot see inside, or detect what might happen within the interior - it is forever unable to be witnessed. The invisible 'dividing line' in space where matter or energy will be unavoidably drawn into the black hole is known as the event horizon, because like the earth's horizon nothing can be seen beyond it. It was later found that energy can escape from black holes in an unexpected way, and that therefore black holes can evaporate. In space, virtual particles are continually coming into existence and vanishing on a microscopic scale that is so small they cannot easily be detected. This is a consequence of quantum physics and only works on a subatomic scale. Conceptually, these particles can be imagined to appear in pairs and vanish a tiny fraction of a second later again. For this reason they are not readily noticed. But close to the black hole's event horizon, the intense gravitational field separates the two particles even in the fractional second that they exist. One particle may be absorbed into the black hole, the other escapes. From an external perspective all that is seen is the second of these, giving the appearance of energy being radiated outward, escaping from its gravitational field beyond the event horizon. In this way, paradoxically, black holes can evaporate. This process is thought to be significant for the very smallest black holes, as a black hole of stellar mass or larger would absorb more energy from cosmic microwave background radiation than they lose this way. The radiation emitted is referred to as Hawking radiation. Black holes generally come in two types: those with a mass up to ten times the mass of our Sun, and those with a mass that is millions or billions of times that of our sun. The latter are called supermassive black holes, and are thought to exist at the centers of galaxies. Micro black holes are believed to be possible but very short-lived, capable of creation under extreme circumstances such as the Big Bang or perhaps by very high powered particle accelerators or ultra-high-energy cosmic rays

Answer 4

A black hole is an object predicted by general relativity,[1] with a gravitational field so powerful that even electromagnetic radiation (including light itself) cannot escape its pull. They can only been seen because of the swirl that the black holes produce when ‘sucking’ in the matter.
The chances of the earth ‘going’ through one is small but not impossible.
The fact that black holes can ‘wander’ means that it poses a threat to Earth and Humanity.

Answer 5

A "Black Hole" is not a hole at all.

It is extremely dense matter without any atomic structure.

When people talk about things "going into" a Black Hole, they mean being absorbed by it.

Nothing can escape a Black Hole once it has been absorbed, so, no the Earth cannot go through it.

When you talk about going back in time, I think you are getting confused with "worm holes" in the space-time continuum. Nothing to do with Black holes.

Answer 6

A black hole is a theoretical entity predicted by the equations of general relativity. A black hole is formed when a star of sufficient mass undergoes gravitational collapse, with most or all of its mass compressed into a sufficiently small area of space, causing infinite spacetime curvature at that point (a "singularity"). Such a massive spacetime curvature allows nothing, not even light, to escape from the "event horizon," or border.

Answer 7

Your question is very broad and many good scientists have written thousands of books on this subject. With a reasonably short answer there is the possibility of criticism for inaccuracy, however . . .

A black hole is believed to be a magnetic field that is so strong that not even light can escape. Everything, that falls into a black hole is stretched out and compressed to a point called a singularity.

As for time travel, it is unlikely because as one approaches the speed of light (c.), time slows until it finally stops. Another thing that happens as you approach c., is that mass increases. At these points, our laws of physics "break down" and no one really knows for sure.

The chances that the earth could get caught in one are very small, but not impossible.

Answer 8

a black hole is a magnetic feild created by stars. things that go in seis to exist do to radiation, light doesnt escape so other objects wouldn't make a difference. if a black hole was to suck up earth then the planet might be destroued. we wont go back in time.

Answer 9

Anything that goes into a Black hole will be crushed out of existence but may be emitted as radiation known as Hawking Radiation

Answer 10

Mez: Black holes are NOT extremely dense matter without atomic structure. Black holes are singularities in space-time and thus they cannot be defined in traditional atomic structures.

Wormholes, as a space-time portal, are purely conjecture and likely non-practical for massive objects such as you.