Is Black Hole is exactly a natural time machine?

Question

I don't know much about stars and all that...but I have heard that Black hole sucks in whatever comes near it and it's really dark from inside. But people also believe that they are the natural time machine. Is this true? If it is, then can we select the time period we want to go in??

Answer 1

stars turn matter into harder materials and black wholes break them back down into lighter elements. so its probably like a recycler. personally i doubt its a gate into another part of the universe or into a different time. light cant escape it, if someone fell inside, what we see will be unusual to our eyes because our eyes use the light that bounces off objects to see. if the light never gets back to us, then we would never see that object. other than that we can never know for sure what black wholes really do.

Answer 2

A black hole is simply something we do not understand. We think we have an idea as to what it does, what we do not understand is why and what for. The gravity of a black hole is so powerful and strong that when anything including light enters beyond the event horizon it is captured by the gravity and can't escape. It is possible that this giant distortion in gravity would also distort time. This is just theoretical of course, but if time were to halt or reverse then would you really be sucked into the black hole?

I think that time speeds up. This would explain why not even light can escape its jaws. Because time has been exponentially increased directly along with gravity.

Just my opinion of course! I don't think we would be able to go back in time, but perhaps forwards!

Cool question!

Answer 3

It is human nature to call some things for what they are not, and then have problem to comprehend what those things really are, because it becomes misunderstood and a cumbersome entities, which has some meaning to it and then suddenly not.

BLACK HOLES DO NOT EXIST, THERE ARE SIMPLY NO HOLES IN THE UNIVERSE, IT IS THAT SIMPLE!

Any heavenly body that we know, even a molecule has its own mass, mass has gravity, and gravity is a building force of the universe that creates moons, planets and suns, and we all know that.

The sun is an entity that has a bigger mass than a planet; molecules are being crushed by the enormous weight of other molecules which create enormous amount of heat, planet Earth is a good example with hot magma underneath its crust.

Density and weight create constant pressure on the atoms of the molecules of the sun, and then it goes nuclear; some mass of the sun explodes and then pulled back by sun’s gravity on top of the rest of the mass of the sun again and again and we see light of these explosions for as long as the sun is in the balance of its own gravity and constant explosion, or as long as the sun lives.

Now imagine a Sun that is bigger than the normal sun, much bigger, more mass, more gravity, and it has so much gravity that even its own light cannot escape it, (Kvant is also a meter, and it has its own gravitational properties) and yes you guessed it, the infamous “BLACK HOLE”.

If some traveler, or a lost planet, or a small sun gets in to gravitational pull of the “SUPER SUN”, “BLACK SUN” or “BLACK HOLE”, if it sounds better. They will just become part of it, disintegrating in a process and before that, creating spectacular rings around a gravitational pull.

In regard of a time machine, well the human mind is very creative and makes things possible. Just like everything else in universe, an idea has its own gravity, and it may become bigger and real.

This question is much more difficult to answer than others did.

In some sense: Yes, a black hole is a time-machine. Formally time and space coordinates change inside of a black hole. In that respect you can move freely in time but not in space. However you cannot visit dinosaurs etc. because you cannot leave the black hole - and you have only a fraction of a second to live (in a big black hole, if it is the remnant of a star its gravitational effects = tidal forces are so strong that you going to be a spaghetti before you enter the black hole).

Also a rapidly rotating black hole might be a time machine if you are moving close nearby (through the ergosphere which is outside of the event horizon). But this cannot bring you way back in time. Thus, again, you cannot visit the dinosaurs.

However, this is just classical General Relativity (GR). GR allows time machines of different sorts, black holes are not very practical here. However, nobody knows whether this are realistic solutions. Nature might forbid closed time-like curves (aka time machines), as e.g. Stephen Hawking thinks. One needs an even more powerful and general theory, i.e. a theory of quantum gravity. We do not have one, but promising approaches like string theory give already hints that nature prevents the building (or natural origin) of closed time-like curves. So PERHAPS time machines are not possible in principle.

This question is much more difficult to answer than others did.

In some sense: Yes, a black hole is a time-machine. Formally time and space coordinates change inside of a black hole. In that respect you can move freely in time but not in space. However you cannot visit dinosaurs etc. because you cannot leave the black hole - and you have only a fraction of a second to live (in a big black hole, if it is the remnant of a star its gravitational effects = tidal forces are so strong that you going to be a spaghetti before you enter the black hole).

Also a rapidly rotating black hole might be a time machine if you are moving close nearby (through the ergosphere which is outside of the event horizon). But this cannot bring you way back in time. Thus, again, you cannot visit the dinosaurs.

However, this is just classical General Relativity (GR). GR allows time machines of different sorts, black holes are not very practical here. However, nobody knows whether this are realistic solutions. Nature might forbid closed time-like curves (aka time machines), as e.g. Stephen Hawking thinks. One needs an even more powerful and general theory, i.e. a theory of quantum gravity. We do not have one, but promising approaches like string theory give already hints that nature prevents the building (or natural origin) of closed time-like curves. So PERHAPS time machines are not possible in principle.

This question is much more difficult to answer than others did.

In some sense: Yes, a black hole is a time-machine. Formally time and space coordinates change inside of a black hole. In that respect you can move freely in time but not in space. However you cannot visit dinosaurs etc. because you cannot leave the black hole - and you have only a fraction of a second to live (in a big black hole, if it is the remnant of a star its gravitational effects = tidal forces are so strong that you going to be a spaghetti before you enter the black hole).

Also a rapidly rotating black hole might be a time machine if you are moving close nearby (through the ergosphere which is outside of the event horizon). But this cannot bring you way back in time. Thus, again, you cannot visit the dinosaurs.

However, this is just classical General Relativity (GR). GR allows time machines of different sorts, black holes are not very practical here. However, nobody knows whether this are realistic solutions. Nature might forbid closed time-like curves (aka time machines), as e.g. Stephen Hawking thinks. One needs an even more powerful and general theory, i.e. a theory of quantum gravity. We do not have one, but promising approaches like string theory give already hints that nature prevents the building (or natural origin) of closed time-like curves. So PERHAPS time machines are not possible in principle.

This question is much more difficult to answer than others did.

In some sense: Yes, a black hole is a time-machine. Formally time and space coordinates change inside of a black hole. In that respect you can move freely in time but not in space. However you cannot visit dinosaurs etc. because you cannot leave the black hole - and you have only a fraction of a second to live (in a big black hole, if it is the remnant of a star its gravitational effects = tidal forces are so strong that you going to be a spaghetti before you enter the black hole).

Also a rapidly rotating black hole might be a time machine if you are moving close nearby (through the ergosphere which is outside of the event horizon). But this cannot bring you way back in time. Thus, again, you cannot visit the dinosaurs.

However, this is just classical General Relativity (GR). GR allows time machines of different sorts, black holes are not very practical here. However, nobody knows whether this are realistic solutions. Nature might forbid closed time-like curves (aka time machines), as e.g. Stephen Hawking thinks. One needs an even more powerful and general theory, i.e. a theory of quantum gravity. We do not have one, but promising approaches like string theory give already hints that nature prevents the building (or natural origin) of closed time-like curves. So PERHAPS time machines are not possible in principle.

This question is much more difficult to answer than others did.

In some sense: Yes, a black hole is a time-machine. Formally time and space coordinates change inside of a black hole. In that respect you can move freely in time but not in space. However you cannot visit dinosaurs etc. because you cannot leave the black hole - and you have only a fraction of a second to live (in a big black hole, if it is the remnant of a star its gravitational effects = tidal forces are so strong that you going to be a spaghetti before you enter the black hole).

Also a rapidly rotating black hole might be a time machine if you are moving close nearby (through the ergosphere which is outside of the event horizon). But this cannot bring you way back in time. Thus, again, you cannot visit the dinosaurs.

However, this is just classical General Relativity (GR). GR allows time machines of different sorts, black holes are not very practical here. However, nobody knows whether this are realistic solutions. Nature might forbid closed time-like curves (aka time machines), as e.g. Stephen Hawking thinks. One needs an even more powerful and general theory, i.e. a theory of quantum gravity. We do not have one, but promising approaches like string theory give already hints that nature prevents the building (or natural origin) of closed time-like curves. So PERHAPS time machines are not possible in principle.

Answer 4

No, that isn't true by any physics I ever heard.  If you go into a black hole, your time will slow down but you will so end up inside the singularity with no way to escape.  Physical laws don't apply in the singularity so many have speculated on what that might mean.

Answer 5

yeah, thats right

        many scientists are trying to make a time machine which will be able to work just becoz of black hole

Answer 6

Once you go into a Black Hole, you never get out again.

It is a time machine in the sense that as you enter the event horizon, if you look behind you you'll see the entire future history of the Universe unfold before your eyes, compressed into a few seconds.  But then you get crushed in the singularity.

A real time machine is the "Tipler Time Machine".  Try googling it.

Answer 7

no not a time machine

Answer 8

again, humans of earth, LISTEN. sheeez.....we do not yet know exactly what a "black hole" is. the information on this cosmic phenomenon is just not available on the earth yet.

Answer 9

Well... ... no. The reason a black hole sucks in everything is because its gravity is enormously greater than you can imagine. Scientists believe that everything that gets sucked into a black hole gets turned into dust (or even completely annihilated).

But believe what you want.

Answer 10

its more like an atom smasher

Answer 11

This question is much more difficult to answer than others did.

In some sense: Yes, a black hole is a time-machine. Formally time and space coordinates change inside of a black hole. In that respect you can move freely in time but not in space. However you cannot visit dinosaurs etc. because you cannot leave the black hole - and you have only a fraction of a second to live (in a big black hole, if it is the remnant of a star its gravitational effects = tidal forces are so strong that you going to be a spaghetti before you enter the black hole).

Also a rapidly rotating black hole might be a time machine if you are moving close nearby (through the ergosphere which is outside of the event horizon). But this cannot bring you way back in time. Thus, again, you cannot visit the dinosaurs.

However, this is just classical General Relativity (GR). GR allows time machines of different sorts, black holes are not very practical here. However, nobody knows whether this are realistic solutions. Nature might forbid closed time-like curves (aka time machines), as e.g. Stephen Hawking thinks. One needs an even more powerful and general theory, i.e. a theory of quantum gravity. We do not have one, but promising approaches like string theory give already hints that nature prevents the building (or natural origin) of closed time-like curves. So PERHAPS time machines are not possible in principle.

Answer 12

the LHC is exactly what you speak of

exacpt its not perfect - they mess up and people get sucked in and the black holes close and people get stuck in that time its bad

this person from the future told me that and warned to shut the thing down

crazy ?  - yes, but i thought id share

Answer 13

Wow.

Most of that is not science, but science fiction. For a little better information check out the wiki page.  http://en.wikipedia.org/wiki/Black_hole

Essentially they are extremely dense areas with huge gravitational pull. They appear to suck in light yes, but anything relating to time travel is purely hypothetical and has no proof in any form yet.

Answer 14

It is human nature to call some things for what they are not, and then have problem to comprehend what those things really are, because it becomes misunderstood and a cumbersome entities, which has some meaning to it and then suddenly not.

BLACK HOLES DO NOT EXIST, THERE ARE SIMPLY NO HOLES IN THE UNIVERSE, IT IS THAT SIMPLE!

Any heavenly body that we know, even a molecule has its own mass, mass has gravity, and gravity is a building force of the universe that creates moons, planets and suns, and we all know that.

The sun is an entity that has a bigger mass than a planet; molecules are being crushed by the enormous weight of other molecules which create enormous amount of heat, planet Earth is a good example with hot magma underneath its crust.

Density and weight create constant pressure on the atoms of the molecules of the sun, and then it goes nuclear; some mass of the sun explodes and then pulled back by sun’s gravity on top of the rest of the mass of the sun again and again and we see light of these explosions for as long as the sun is in the balance of its own gravity and constant explosion, or as long as the sun lives.

Now imagine a Sun that is bigger than the normal sun, much bigger, more mass, more gravity, and it has so much gravity that even its own light cannot escape it, (Kvant is also a meter, and it has its own gravitational properties) and yes you guessed it, the infamous “BLACK HOLE”.

If some traveler, or a lost planet, or a small sun gets in to gravitational pull of the “SUPER SUN”, “BLACK SUN” or “BLACK HOLE”, if it sounds better. They will just become part of it, disintegrating in a process and before that, creating spectacular rings around a gravitational pull.

In regard of a time machine, well the human mind is very creative and makes things possible. Just like everything else in universe, an idea has its own gravity, and it may become bigger and real.

Answer 15

A Black Hole is a collapse in a stars gravitational field from a supernova (Only high mass stars are able to produce a supernova). When a black hole forms anything that enters it is crushed do to the amount of gravity that is exerted on the object. It is a possibility that a black hole is able to move objects from one place to another.

Answer 16

black holes are not time machines.

Here's what you want to know in a nutshell.. and it's easy reading...

http://imagine.gsfc.nasa.gov/docs/scienc...

Answer 17

A black hole is a dense, supermassive object.  It's gravitational attraction is such that even light cannot escape from the force it exerts.

There are theories abound regarding how they might warp space-time to such an extent as to provide a method of travelling to a different time.  I don't know of any theory about how you could select a particular time period to travel to.

Also, as far as using a black hole for human time travel, with any known technology, we couldn't.  So the whole thing is rather moot.  The gravitational force created by the black hole would crush a human body.