Black Hole theory

[Hans5849]

Simply put i posted this on another forum and they told me to post it here to get a better response.


Black holes can basically swallow anything and they warp time. What if there was a black hole big enough to swallow the entire universe, would it not destroy all time too. If a black hole swallowed all the matter in the universe could it not reach the gravitational point that it would actually explode creating a new big bang, or would this be where our current universe came from.

Its a idea that i've been going over in my head, unfortonatley i and a visaul thinker so when i think of these things i think of the image of it, and it is hard for me to transcribe into words. But think of the image of what would happen and you would get what im thinking about

I am basing my theory on the fact that black holes exist and that they can grow larger when more matter is added to them. So if a black hole "swallowed" (swallowed being sucked it into its single point gravity) enough matter it could eventually swallow other black holes (and the matter that is between them) creating a super black hole that would suck matter into at a rate that could possibly excceed the speed of light.

 

[CycloWizard]

I'm hardly a physicist, but... I've heard it said that as time progresses, the universe will eventually begin to contract again under its own gravity, maybe not to the 'center' from whence it came, but to some point within itself. As the matter collects, it would form something similar to a black hole and its mass/gravity would increase over time. Eventually all mass would be added to it. Whether or not another big bang would occur I have no idea.

 

[silverpig]

Black holes don't "suck" things in any differently than the earth "sucks" things downwards. It's just gravity. In fact, if you compressed the sun down to a radius of 1.48 km it would turn into a black hole. We would continue to orbit the sun at our current orbit and everything would be just as it is, except it'd be dark.

Furthermore, the universe is expanding too quickly for gravity to slow it down and progress towards a single supermassive black hole.

Also, black holes "evaporate" over time and lose mass. If you isolated a black hole by itself for a long time it would continuously radiate energy, becoming less and less massive at an accelerating rate until it exploded (it'd have to be pretty small by that point... like less than a kilogram).

 

[MisterChief]

Originally posted by: CycloWizard
... I've heard it said that as time progresses, the universe will eventually begin to contract again under its own gravity...

How about this theory?
According to most scientists, the universe was formed in the Big Bang, when all matter was collected in a superheated ball the size of a marble, or whatever. Now, what if the universe is in this state of infinite expansion and contraction? Every few thosand millenia, time starts over again. The funniest thing is, we'll never know.

Kinda humbling, isn't it?

 

[IlllI]

what happens if a black hole eats another black hole?

 

[MisterChief]

Originally posted by: skunkbuster
what happens if a black hole eats another black hole?

That is a surefire sign of the apocalypse...aka, Bush just pressed the big red button on his desk while pondering how to find a pot of gold in the corner of the Oval Office.

 

[silverpig]

Originally posted by: skunkbuster
what happens if a black hole eats another black hole?

You get a really big black hole

 

[Geniere]

skunkbuster...
what happens if a black hole eats another black hole?

The short answer is the combined black hole will have the sum of the masses of the two. I really suspect that not enough is known to go further than that. I think it might be interesting to contemplate the merging of a super massive black hole, one with say a 1million sun mass with another black hole having the mass of two suns. As the smaller approaches, it will go into orbit around the larger spiraling inward until the event horizon is reached when the two will merge. Just before merger, the smaller will have a very high velocity; I think a good percentage of the speed of light. I would imagine it would produce gravitational waves of high frequency and magnitude and an immense amount of high energy EM radiation from interaction with the cloud of debris that is already in orbit.

MisterChief...How about this theory?
According to most scientists, the universe was formed in the Big Bang, when all matter was collected in a superheated ball the size of a marble, or whatever. Now, what if the universe is in this state of infinite expansion and contraction? Every few thosand millenia, time starts over again. The funniest thing is, we'll never know.

Present data now indicates the universe does not contain enough mass to contract. It now appears near certain the universe is expanding at an accelerated rate. The end result will be cold, black, and lifeless, no nuclear reactions, no chemical reactions, no nothing.

 

[TheShiz]

Originally posted by: Geniere

skunkbuster...
what happens if a black hole eats another black hole?

The short answer is the combined black hole will have the sum of the masses of the two. I really suspect that not enough is known to go further than that. I think it might be interesting to contemplate the merging of a super massive black hole, one with say a 1million sun mass with another black hole having the mass of two suns. As the smaller approaches, it will go into orbit around the larger spiraling inward until the event horizon is reached when the two will merge. Just before merger, the smaller will have a very high velocity; I think a good percentage of the speed of light. I would imagine it would produce gravitational waves of high frequency and magnitude and an immense amount of high energy EM radiation from interaction with the cloud of debris that is already in orbit.

MisterChief...How about this theory?
According to most scientists, the universe was formed in the Big Bang, when all matter was collected in a superheated ball the size of a marble, or whatever. Now, what if the universe is in this state of infinite expansion and contraction? Every few thosand millenia, time starts over again. The funniest thing is, we'll never know.

Present data now indicates the universe does not contain enough mass to contract. It now appears near certain the universe is expanding at an accelerated rate. The end result will be cold, black, and lifeless, no nuclear reactions, no chemical reactions, no nothing.

this is really interesting. because the universe cannot go on accelerating forever, i wonder what the terminal velocity of the universe is.

 

[Jeffyboy]

Not to mention, there is about 3 hydrogen atoms per liter of space... eventually everything within the sphere of influence will collapse.

Also, forget the black holes... watch out fo the donut it came from ;-)

 

[DoC91383]

Is there actually PICTURES of a blackhole? I've never actually known if they are real or myth. And if they are real has anyone actually provided evidence of something passing through it doens't come out the other side?

 

[MisterChief]

And what of alternate or parallel universes outside the one we know?

 

[Geniere]

TheShiz?this is really interesting. Because the universe cannot go on accelerating forever, I wonder what the terminal velocity of the universe is.

The hypothesis assumes a new force termed ?Dark Energy?, the energy of the vacuum. Dark energy produces negative gravity. Apparently several billion years ago, the dark energy force (negative gravity) became greater than the gravitational force. This occurred because the original expansion caused the energy density (energy includes all matter) to be lower than the energy density of the vacuum. Google ?zero point energy? for an explanation of vacuum energy. Because of dark energy the universe is expanding at an accelerated rate. Google ?Big Rip? for one possible dismal outcome. One cannot state ?velocity of expansion? because it has no meaning. Space itself is expanding and is known to do so by the decrease in energy (red shift) of starlight from very distant galaxies.

Jeffyboy?Also, forget the black holes... watch out of the donut it came from ;-)

Black holes may be a sphere if the star they evolved from had zero rotational velocity. Presumably most stars would have been rotating before they collapsed. A rotating massive star would not collapse into a sphere but would collapse into a donut shaped (toroid) black hole.

DoC91383?Is there actually PICTURES of a black hole? I've never actually known if they are real or myth. And if they are real has anyone actually provided evidence of something passing through it doesn?t come out the other side?

You can take a picture of the glowing debris in orbit around the black hole but you can?t take a picture of the black hole itself, as it emits no radiation including visible light (ignoring virtual particles). Black holes must exist to explain some phenomena in astronomical observations, they cannot be seen but their effects have been observed.

MisterChief?And what of alternate or parallel universes outside the one we know?

We will never know what is outside our universe except possibly in a mathematical sense per some String theorists who hypothesize multiverses. For us the universe is all there is, all that ever was, and all that will ever be. Our universe may be more than 3 dimensional, something else we will never be sensuously aware of. There is no center of the universe, there is no edge to the universe, the universe is infinite dimensionally, it has no boundaries. There is a limit to the visible universe; that limit would be the distance traveled by the photons that were released when the primeval fireball cooled sufficiently, about 400 thousand years after the Big Bang.

 

[syconub]

Originally posted by: MisterChief

Originally posted by: CycloWizard
... I've heard it said that as time progresses, the universe will eventually begin to contract again under its own gravity...

How about this theory?
According to most scientists, the universe was formed in the Big Bang, when all matter was collected in a superheated ball the size of a marble, or whatever. Now, what if the universe is in this state of infinite expansion and contraction? Every few thosand millenia, time starts over again. The funniest thing is, we'll never know.

Kinda humbling, isn't it?

i guess we will haveto wait then.....il be in the bathroom if you need me.

 

[DrPizza]

Also, black holes aren't really that rare... IIRC, it's estimated that there are millions of black holes in the Milky Way galaxy alone, formed from collapsing stars. It's also theorized that at the center of galaxies, including our own, there exists a super-black hole, thousands of times more massive than the black holes caused by collapsing stars.

 

[halfadder]

Here's the big question:

How can AMD best make use of black hole theory to remain the price/performance leader?



Happy New Year everybody!

 

[hoppa]

if general relativity is correct, then it has been shown that there *is* a supermassive black hole in the center of our galaxy. scientists showed this recently by releasing years of data of tracking a stars position that is very near the center of our galaxy.

as for the issue of the universe expanding forever, well, about a year ago it was shown the universe will never stop expanding. while the idea of an end of the universe is quite humbling, i much prefer it to a universe that will exist forever. i was very unhappy when that news came out. makes one feel very worthless... a single being in infinite time is a hell of a lot less than a single being in finite time.

how's this, for the sake of argument: 0.9999... ad infinitum = 1. we all know that. accordingly, 0.000.......1, with infinite zeroes, equals 0. zero is nothing. it exists, but it is nothing. but i and you and everyone is something, even though time will continue forever. we are that infinitely small fraction that is zero, and yet...

 

[Addis]

Our neighbouring galaxy, Andromeda is on course to collide with teh Milky Way. But by then it may be that the Super Black hole will probably devour fractions of our galaxy.
There have been some theories that although matter would be crushed into an infinite density, the singularity, it may be that black holes could lead into other dimensions/multiverses. We know so little about what really happens in a blakc hole that there can't be many arguments saying that this is impossible.
Is there anything behind a black hole? Or is it spherical?

 

[silverpig]

Originally posted by: Addis
Our neighbouring galaxy, Andromeda is on course to collide with teh Milky Way. But by then it may be that the Super Black hole will probably devour fractions of our galaxy.
There have been some theories that although matter would be crushed into an infinite density, the singularity, it may be that black holes could lead into other dimensions/multiverses. We know so little about what really happens in a blakc hole that there can't be many arguments saying that this is impossible.
Is there anything behind a black hole? Or is it spherical?

Schwarzchild black holes are non-rotating and spherical. They are they simplest kind. Kerr black holes are rotating black holes. If you spin them fast enough, they can form a torus and you will have a wormhole going through the center of them. But as soon as any matter enters this wormhole it collapses. We know what happens mathematically, but physically it's still up in the air.

 

[Chipshop]

and black holes have no hair =]

 

[f95toli]

Originally posted by: Chipshop
and black holes have no hair =]

I far as I understand Hawking has changed his mind.
Seems they have hair after all.

 

[Chipshop]

ooooh yeah. lol, i forgotten about that :/ my bad.

 

[MisterChief]

Originally posted by: halfadder
Here's the big question:

How can AMD best make use of black hole theory to remain the price/performance leader?



Happy New Year everybody!

By jacking intel's new wormhole threading technology!!

 

[imported_jb]

Originally posted by: Jeffyboy
Not to mention, there is about 3 hydrogen atoms per liter of space...

for real? i got this theory that says that as the universe expands, new matter is created at the edge and this would cause evenly spaced, equal-sized stars. basically forming a grid, and the grid would pretty much point to the center of the universe. before gravitational drift, star deaths, and stuff.

 

[Pohemi]

Originally posted by: jb

Originally posted by: Jeffyboy
Not to mention, there is about 3 hydrogen atoms per liter of space...

for real? i got this theory that says that as the universe expands, new matter is created at the edge and this would cause evenly spaced, equal-sized stars. basically forming a grid, and the grid would pretty much point to the center of the universe. before gravitational drift, star deaths, and stuff.

Created out of what?? Did you come up with that theory yourself?

Anyway, I'm curious...theoretically, once something passes the event horizon nearing a black hole (where not even light escapes when passing) does it travel to the point of singularity at or above the speed of light?

One theory states that if two people were standing on the outside of the event horizon, and one of them stepped over:
1)To the person standing outside the horizon, it would appear that the one who had crossed had instantly disappeared, being drawn to the point of singularity
2)To the person who had crossed, time would appear to stop, and they would be able to see the person on the outside forever frozen in time

How the heck do you explain that??