What if the universe exists around a black hole?

[notme1lt]

I'm newer to this so please don't attack my ignorance towards things.
A thought I had a little while ago while trying to fall asleep, if you understand how gravity works with the example of the fabric of space (if not search gravity visualized on youtube its the first video) then think of a black hole as a rip or dent in that fabric (part of my theory). if you look at black holes you see there is a super massive black hole at the center of every galaxy. so why not expand that to the universe? we know there was the big bang, and we know when there is a explosion with great mass a black hole follows. so that would say the big bang would create a hypermassive (idk what other word to use) black hole in the center. it is known that we are like bugs trapped on a bubble only able to look inwards to the universe, and we see that things are moving apart faster and faster, so maybe the expansion is caused by the hypermassive black hole sucking us towards it. this would lead the question of what would have caused the big bang? well if you look at a supernova, or a hypernova you see that they create alot of gas and dust that moves around and eventually condense into their own stars planets and such.. so maybe the big bang wasn't the start, maybe there was a ultragiant star that got to the end of its life span and blew up creating a massive hypernova we know as the big bang.

Again something I thought of while trying to fall asleep so please find the holes with that in mind

Edited March 1, 2016 by notme1lt

[Strange]

Firstly, congratulations on being imaginative and interested in the subject.

 

But it isn't accurate to describe a black hole as a "rip" in space-time. It causes the same sort of curvature as any other massive object, just more extreme.

 

Also, the expansion of the universe is not like an explosion. That implies that everything expanded from some central point out into empty space. In the standard big bang model there is no centre and space was always full of matter. It has just got less dense and cooler over time.

 

Finally, if we (and presumably everything else) were being pulled towards a central black hole then things would appear to be getting closer together not furtehr apart.

 

So, your idea doesn't really work. I suggest you read up a bit more on the current big bang model.

[notme1lt]

Firstly, congratulations on being imaginative and interested in the subject.

 

But it isn't accurate to describe a black hole as a "rip" in space-time. It causes the same sort of curvature as any other massive object, just more extreme.

 

Also, the expansion of the universe is not like an explosion. That implies that everything expanded from some central point out into empty space. In the standard big bang model there is no centre and space was always full of matter. It has just got less dense and cooler over time.

 

Finally, if we (and presumably everything else) were being pulled towards a central black hole then things would appear to be getting closer together not furtehr apart.

 

So, your idea doesn't really work. I suggest you read up a bit more on the current big bang model.

When I mentioned the "rip or dent" I was more referring to it in the sense of a pencil pushing into a sheet of paper making a dent or hole. about the expansion, I don't mean the explosion itself is the expansion, I mean it as in we are looking towards the galaxy's which are closer to the center getting sucked inward. with us seeing the universe on the outer bubble we would see the ones closest to the black hole moving faster and faster away as they get pulled in faster and faster by the gravity. us being farther back wouldn't have as strong of a gravitational pull thus showing the inward galaxy's moving further and further away. also thank you for replying, nobody I know even understands what I'm talking about let alone tell me where I'm going wrong.

[Strange]

When I mentioned the "rip or dent" I was more referring to it in the sense of a pencil pushing into a sheet of paper making a dent or hole. about the expansion, I don't mean the explosion itself is the expansion, I mean it as in we are looking towards the galaxy's which are closer to the center getting sucked inward. with us seeing the universe on the outer bubble we would see the ones closest to the black hole moving faster and faster away as they get pulled in faster and faster by the gravity. us being farther back wouldn't have as strong of a gravitational pull thus showing the inward galaxy's moving further and further away. also thank you for replying, nobody I know even understands what I'm talking about let alone tell me where I'm going wrong.

 

There was another thread recently where someone tried to argue for falling in creating the impression of things moving apart. I see several problems with this:

 

1. There is no centre (in current cosmological models). Or, if you prefer, the centre is everywhere.

 

2. I don't think that the increasing separation between free-falling bodies is proportional to distance. I can't be bothered to do the math to disprove this, and the other person couldn't do the math to prove it. Can you?

 

3. If you consider multiple objects falling towards a common centre from the same heigh, then they will be on radial paths and so will get closer together. This is not what we see: we see isitropic expansion; not expansion in some directions and contraction at right angles.

 

4. How long could we continue falling until we hit the [nonexistent] centre.

 

5. How does this model explain the spectrum and temperature of the CMB?

 

6. Oh, you know. All the other evidence for the big bang model. And the fact that GR works, etc.

[notme1lt]

Again I am newer to this so I don't really have an educated background about the subject, however with the CMB, the waves come out in a spherical shape, wouldn't that have to have had a center? I'm not trying to argue any point, I'm simply trying to get a better knowledge around the subject with theorizing so with the math behind it I wouldn't know where to start.. with the falling towards the center, I forgot the isotopic expansion with my lack of knowledge around the subject I looked at it with blinders on. with the speed of falling, the gravitational pull would depict how fast we are falling towards it. again I would like to point out I am just trying to get a better understanding for myself I'm sorry if it seems like I'm arguing or something.

[Mordred]

Its great you desire to learn, and your not precisely pushing your own idea.

 

As Strange mentioned there is no center. Expansion data shows no preferred direction or location (center) to expansion.

 

This is described by the cosmological principle. The universe is homogeneous and isotropic.

 

To better understand these terms here is two useful articles.

 

http://www.phinds.com/balloonanalogy/ : A thorough write up on the balloon analogy used to describe expansion

http://tangentspace.info/docs/horizon.pdf :Inflation and the Cosmological Horizon by Brian Powell

[notme1lt]

Its great you desire to learn, and your not precisely pushing your own idea.

 

As Strange mentioned there is no center. Expansion data shows no preferred direction or location (center) to expansion.

 

This is described by the cosmological principle. The universe is homogeneous and isotropic.

 

To better understand these terms here is two useful articles.

 

http://www.phinds.com/balloonanalogy/ : A thorough write up on the balloon analogy used to describe expansion

http://tangentspace.info/docs/horizon.pdf :Inflation and the Cosmological Horizon by Brian Powell

Thank you both, I forgot about the balloon analogy towards expansion being extremely tired at the time. I know I wasn't pushing my own idea per say however I couldn't find a post of it prior so I figured I would find my own answers, would you happen to know of any other posts where people have the same type of idea so I can get more knowledge based off the reply's? I figure I've started my interest too late. already 18 and just started extremely sorry if I'm an idiot with this.

[Strange]

however with the CMB, the waves come out in a spherical shape, wouldn't that have to have had a center?

 

The CMB is very nearly the same in all directions around us. As is the rate at which galaxies are moving away from us. This makes it look like we are in the centre of the universe. But actually, we are just in the centre of our observable universe. A little thought shows that all galaxies are moving away from each other with a speed proportional to their distance, which means there is some sort of uniform expansion or scaling going on (just as predicted by general relativity).

 

The thing about the CMB is that it is an almost perfect black body spectrum (and so it can't be, for example, just the light from distant stars) and it has exactly the temperature predicted by the big bang model.

 

Basically, the big bang model made a number of predictions all of which have, so far, been found to be correct. That is why it is the current best theory we have for the nature and evolution of the universe.

I figure I've started my interest too late. already 18 and just started extremely sorry if I'm an idiot with this.

 

Not at all. It is great that you are interested and willing to test your ideas.

[Mordred]

As far as others involving blackholes with universe creation etc. There is no lack of similar threads.

 

Seems to be a common first misunderstanding.

[notme1lt]

I have seen the CMB used as a for a photograph of the infant universe. I based the spherical expansion of the universe from that central point. I was connecting false dots I assume. would you happen to have a link to the current model? anything I have found so far is a vague description and being 18 I figure I'm too late towards the mathematics, so a real world description is the best I can try for