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Locating the centre of the Universe


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#1    dazdillinjah

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Posted 04 January 2010 - 06:39 AM

I have never been able to get an answer for this ..but worse, I keep finding information suggesting there isnt one.

As far as Im concerned that is just wrong ..imo there 'must' be a centre of the Universe, and especially if the big bang theory is to be believed.

I realise the big bang theory is 'just a theory' however if the universe did begin from a point or singularity & that scientists propose the universe is expanding due to measurements of galaxies then the expansion must be from one single position in all directions.

A further point of contention when considering a 'centre of the universe' is the use of red shift/blue shift in calculating if a galaxy is moving further away or closer toward our point of perspective ...why I say this is because everything in the Universe is moving, due to the effects of gravity & I believe that there is nothing in the universe that is at a standstill. The thing is that I believe everything orbits something (ie: our moon orbits the Earth, Earth orbits the Sun, Our Solar system orbits our galaxy etc etc) and I have never found any information regarding known orbits of galaxies which would be critical in assessing a possible centre of the universe (or point of the singularity where the big bang as theorised occurs)

As for calculations based on red/blue shift ..how can they be trusted when various stars that have been observed over time have changed from red shift to blue shift (which happens because they orbit their respective galaxies & at certain parts of their orbit would be moving away from our position but then at other parts of their orbit would be moving towards our position)

So yes ...what are your thoughts about this ? Im sure finding the point where the big bang occurred would be priceless for the science of astronomy so I hope its a thing that one day we can locate

Edited by dazdillinjah, 04 January 2010 - 06:41 AM.


#2    Stellar

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Posted 04 January 2010 - 06:56 AM

Quote

I have never been able to get an answer for this ..but worse, I keep finding information suggesting there isnt one.

As far as Im concerned that is just wrong ..imo there 'must' be a centre of the Universe, and especially if the big bang theory is to be believed.

There need not be one. Picture a balloon. The rubber of the balloon is the universe. is there a centre to this universe? No.

Quote

I realise the big bang theory is 'just a theory' however if the universe did begin from a point or singularity & that scientists propose the universe is expanding due to measurements of galaxies then the expansion must be from one single position in all directions.

Not necessairly. Thats assuming a pretty linearly shaped universe. Refer to the balloon example.

Quote

A further point of contention when considering a 'centre of the universe' is the use of red shift/blue shift in calculating if a galaxy is moving further away or closer toward our point of perspective

Actually, this indeed shows that there is no centre to the universe.

Quote

why I say this is because everything in the Universe is moving,

Yes and no. Its not the objects in the universe that is moving, it is the space between them that is expanding.

Quote

As for calculations based on red/blue shift ..how can they be trusted when various stars that have been observed over time have changed from red shift to blue shift (which happens because they orbit their respective galaxies & at certain parts of their orbit would be moving away from our position but then at other parts of their orbit would be moving towards our position)

Why shouldnt they be trusted. If you know the position of the star and the mass of the star, you can determine the speed at which it is moving in stable orbit. Knowing this speed and its current position, you can determine how much red or blue shift there aught to be, and then verify it experimentally. The deviation of the red or blue shift from the theoretically expected shift would correspond to the redshift due to the expansion of the universe.

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#3    dazdillinjah

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Posted 04 January 2010 - 07:07 AM

View PostStellar, on 04 January 2010 - 06:56 AM, said:

There need not be one. Picture a balloon. The rubber of the balloon is the universe. is there a centre to this universe? No.

Yes there is ...its right inside the balloon at an equal distance from the balloons skin


#4    Stellar

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Posted 04 January 2010 - 07:11 AM

Quote

Yes there is ...its right inside the balloon at an equal distance from the balloons skin

Indeed... but inside and outside of the balloon isnt the universe... the membrane of the balloon is the universe.

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#5    dazdillinjah

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Posted 04 January 2010 - 07:19 AM

View PostStellar, on 04 January 2010 - 07:11 AM, said:

Indeed... but inside and outside of the balloon isnt the universe... the membrane of the balloon is the universe.

I thank you for your help with my question Stellar ..very much appreciate discussion about this. However I cannot conceive our Universe as the membrane of the balloon, eg: If we send spacecraft/satellites out to explore the Universe we can send them in any direction ...we are not limited to sending them across the 'membrane' ...in saying that our Universe doesnt have a membrane as per the description that means we cannot travel in a direct line to a destination on the opposite side of the balloon ...we can go straight toward it (correct me if I am wrong) because as far as I know our Universe is at least 3 dimensional


#6    Stellar

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Posted 04 January 2010 - 07:37 AM

Quote

However I cannot conceive our Universe as the membrane of the balloon, eg: If we send spacecraft/satellites out to explore the Universe we can send them in any direction ...we are not limited to sending them across the 'membrane' ...

Thats because the balloon is a mere example of what we believe the universe to be shaped as. In reality, we believe the universe to have more dimensions than the 3 spacial dimensions and 1 temporal dimension we are very familiar with. Think of the balloons 2d membrane to be some sort of a 3d membrane for the universe.

Quote

in saying that our Universe doesnt have a membrane as per the description that means we cannot travel in a direct line to a destination on the opposite side of the balloon ...we can go straight toward it (correct me if I am wrong) because as far as I know our Universe is at least 3 dimensional

Ever hear of the curvature of space-time, and Einstein-Rosenberg bridges? What may appear to us as travelling in a straight line in one of the 3 dimensions may infact not be travelling straight on along the universe. Just as if you were to take a boat from, say, Europe to North America, to you it seems like you are travelling in a straight line but infact you are travelling along the curved surface of the Earth. What is a "straight line" from London to New York isnt actually a straight line unless it were to go through the surface of the Earth.

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#7    Hugh

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Posted 04 January 2010 - 07:41 AM

There is some information here which may be of help:

http://en.wikipedia....ansion_of_space


#8    dazdillinjah

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Posted 04 January 2010 - 08:00 AM

View PostStellar, on 04 January 2010 - 07:37 AM, said:

Thats because the balloon is a mere example of what we believe the universe to be shaped as. In reality, we believe the universe to have more dimensions than the 3 spacial dimensions and 1 temporal dimension we are very familiar with. Think of the balloons 2d membrane to be some sort of a 3d membrane for the universe.



Ever hear of the curvature of space-time, and Einstein-Rosenberg bridges? What may appear to us as travelling in a straight line in one of the 3 dimensions may infact not be travelling straight on along the universe. Just as if you were to take a boat from, say, Europe to North America, to you it seems like you are travelling in a straight line but infact you are travelling along the curved surface of the Earth. What is a "straight line" from London to New York isnt actually a straight line unless it were to go through the surface of the Earth.

Thank you & yes I have read a bit on curvature of space/time ... and as in your example of taking a boat from Europe to North America its true you are actually travelling along the curved surface of the Earth because the water is there ....and similarly if that route was by land (for example) it would still be along the curved surface of the Earth due to being unable to travel through the Earth ie: through something of solid matter ...however in the Universe there are vast expanses of empty space and if their is some kind of solid matter (such as a membrane or skin of a balloon) that isnt any object we know about (such as a planet, a star, an asteroid and so on I would be absolutely stunned to find out about it

I can grasp the example of the balloon skin/membrane but thats because there is air inside the balloon inflating it (using space to do so) ...however its a whole huge leap to say our universe resembles a balloon with nothing inside the membrane because from the point of singularity when the universe was atom sized ...this 'so called' balloon expanded in size and as it did so it increased in size through the space this 'membrane' passed during its expansion ... and if light can travel from one side of the membrane to an antipodes point on the other side of the membrane in a straight line then so can any cosmic object or even a spacecraft/sattelite ...therefore there must be something there (empty space) ...if there was a membrane/balloon skin there preventing this from happening we would have known about it by now ..in fact due to the curvature of the membrane/balloon skin we would be severely limited in what we could observe & we certainly would not be able to observe objects that are super vast distances away from us ...just like the Earths horizon precludes our seeing the other side of the world

So this is why I hope one day we can locate the centre of our universe ...apart from being priceless to the science of astronomy it would definately help things about our universe make sense


#9    Stellar

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Posted 04 January 2010 - 08:14 AM

[quote]
Thank you & yes I have read a bit on curvature of space/time ... and as in your example of taking a boat from Europe to North America its true you are actually travelling along the curved surface of the Earth because the water is there ....and similarly if that route was by land (for example) it would still be along the curved surface of the Earth due to being unable to travel through the Earth ie: through something of solid matter ...however in the Universe there are vast expanses of empty space and if their is some kind of solid matter (such as a membrane or skin of a balloon) that isnt any object we know about (such as a planet, a star, an asteroid and so on I would be absolutely stunned to find out about it
[/quote]

You fail to see the point. To you, on the boat, you think you are travelling in a straight line. It seems to you you are travelling in a straight line, yet you are not. It has nothing to do with something 'solid' being there.

[quote]
I can grasp the example of the balloon skin/membrane but thats because there is air inside the balloon inflating it (using space to do so) ...however its a whole huge leap to say our universe resembles a balloon with nothing inside the membrane because from the point of singularity when the universe was atom sized ...this 'so called' balloon expanded in size and as it did so it increased in size through the space this 'membrane' passed during its expansion ...
[/quote]

Again, the balloon is merely an analogy to the universe. The example is bound to have flaws. Im trying to break down an 11 dimensional universe (assuming current theories are right), down to a 3 dimensional system. There is *bound* to be flaws.

Another model involves the dimensions of the universe looping back among themselves, thus not leaving any 'space' for the universe to expand into or out of.

[quote]
and if light can travel from one side of the membrane to an antipodes point on the other side of the membrane in a straight line then so can any cosmic object or even a spacecraft/sattelite ...
[/quote]

I never said it could travel in an actual straight line. Infact, according to the space-time model of the universe, light is actually subject *to* the curvature of space time. In other words, when light travels in the universe, it follows the curvature of it, rather than going in a truely straight line. Because we are limited in the dimensions we can observe, however, it does appear to go in a straight line in our reference frame.

[quote]
therefore there must be something there (empty space) ...if there was a membrane/balloon skin there preventing this from happening we would have known about it by now
[/quote]

Again, you misunderstand the example. Im not saying the membrane is something physically preventing you from travelling directly from one point to another, rather I'm saying the universe *is* the membrane. Hence, if you travel within the universe, you are travelling along the membrane.

[quote]
..in fact due to the curvature of the membrane/balloon skin we would be severely limited in what we could observe & we certainly would not be able to observe objects that are super vast distances away from us ...just like the Earths horizon precludes our seeing the other side of the world
[/quote]

Not really. If light were to follow the surface of the earth, then we *would* infact see all around the world. Since light seems to follow the curvature of space-time, we very well might be able to see all around the universe. Or maybe this universal horizon is just too far for us to see?

[quote]
So this is why I hope one day we can locate the centre of our universe ...apart from being priceless to the science of astronomy it would definately help things about our universe make sense
[/quote]

All current evidence points to there being no center.

[quote]

"I refuse to have a battle of wits with an unarmed opponent."

----Seraphina

#10    dazdillinjah

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Posted 04 January 2010 - 09:00 AM

View PostHugh, on 04 January 2010 - 07:41 AM, said:

There is some information here which may be of help:

http://en.wikipedia....ansion_of_space

Thank you for the link Hugh ..I also found the link within that page to the Lambda-CDM model also helpful.

A very big thank you to Stellar ..I know you have given me as much of the relevant (currently theorised) facts regarding this topic in as understandable terms as possible.

I guess I can only say the currently accepted facts regarding the dimensions of our universe dont sit well with me ... the steady state theory (preceding the big bang theory) remind me of the flat Earth middle ages way of thinking & the current big bang theory I liken to a hollow Earth theory ... I appreciate that we are still in our infancy of solving the riddles of the universe


#11    Sir Wearer of Hats

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Posted 04 January 2010 - 09:28 AM

There's a Starbucks there.

I must not fear. Fear is the Mind-Killer. It is the little death that brings total obliteration. I will face my fear.
I will permit it to pass over me and to move through me. And when it is gone I will turn the inner eye to see it's path.
When the fear is gone, there will be nothing.
Only I will remain.

#12    Stellar

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Posted 04 January 2010 - 03:05 PM

Quote

I guess I can only say the currently accepted facts regarding the dimensions of our universe dont sit well with me ... the steady state theory (preceding the big bang theory) remind me of the flat Earth middle ages way of thinking & the current big bang theory I liken to a hollow Earth theory ... I appreciate that we are still in our infancy of solving the riddles of the universe

That, indeed, we are.

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#13    danielost

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Posted 04 January 2010 - 03:49 PM

OK steller now tell us what is inside of said ballon, and outside it too.  are they the samething or different things.

I am a mormon.  If I don't use mormons believe, those my beliefs only.
I do not go to church haven't for thirty years.
There are other mormons on this site. So if I have misspoken about the beliefs. I welcome their input.
I am not perfect and never will be. I do strive to be true to myself. I do my best to stay true to the mormon faith. Thank for careing and if you don't peace be with you.

#14    Stellar

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Posted 04 January 2010 - 03:52 PM

Quote

OK steller now tell us what is inside of said ballon, and outside it too. are they the samething or different things.

Depends. Is it a helium balloon?

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#15    danielost

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Posted 04 January 2010 - 04:01 PM

View PostStellar, on 04 January 2010 - 03:52 PM, said:

Depends. Is it a helium balloon?
its your balloon.

I am a mormon.  If I don't use mormons believe, those my beliefs only.
I do not go to church haven't for thirty years.
There are other mormons on this site. So if I have misspoken about the beliefs. I welcome their input.
I am not perfect and never will be. I do strive to be true to myself. I do my best to stay true to the mormon faith. Thank for careing and if you don't peace be with you.




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