Size of the Universe 43 replies

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Serio Advanced Member

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#1 11 years ago

While looking at the Hubble Deep Field image earlier, I came to think of the actual size of the universe, or at least the area where the galaxies are located. The further we can see, the longer back in time we see, right? So what if we were able to see the very edge of the cluster of galaxies and such. Wouldn't everything beyond that point pretty much be darkness, where light is non-existant? I'm not talking about the edge of the universe, just the edge of the galaxies.




The Body Popper

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#2 11 years ago

Well you also have to remember, there are an infinite number of clusters. It's all part of the "Cosmic Web". There are large clusters of galaxies, then smaller strands of them connecting to other clusters. Then in between these are HUGE pockets of nothing. Thats where you would want to look. Or look for other clusters. That would be quite interesting.




Tas

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#3 11 years ago

An infinite number of clusters? I'm sorry but that would mean there is an infinite number of everything.:uhm: What theory is this?




Serio Advanced Member

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#4 11 years ago

You're right. It'd mean there'd be an infinite number of chances for a direct clone of you. Or a planet just like earth, also called earth, with a solar system just like this one.




Rich19

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#5 11 years ago

Space is big. Really big. You just won't believe how vastly hugely mindboggingly big it is. I mean you may think it's a long way down the road to the chemist, but that's just peanuts to space. Listen…




LIGHTNING [NL]

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#6 11 years ago

Serio;4845894While looking at the Hubble Deep Field image earlier, I came to think of the actual size of the universe, or at least the area where the galaxies are located.[/QUOTE] Here you make a mistake. We accept the universe as being homogenous and isotropic. This means there is no area where there are no galaxies. All matter is evenly distributed among the universe.

Serio;4845894The further we can see, the longer back in time we see, right? So what if we were able to see the very edge of the cluster of galaxies and such. Wouldn't everything beyond that point pretty much be darkness, where light is non-existant?

Like I said, there is no 'edge' in our 3 spatial dimensions. There is however an 'edge' in time. If you can look back 13.3 billion lightyears then you will see the 'dark age' that followed the big bang. In this period the matter in the universe had not yet clumped together to form stars and galaxies. Here you will see nothing but darkness.

If you look even further back than that you can see the CMBR (Cosmic Microwave Background Radation). This is the radation from the period following the big bang in which all matter was highly compressed and very hot.

[QUOTE=Serio;4845894]I'm not talking about the edge of the universe, just the edge of the galaxies.

Does the universe have an edge? I don't think it does.




Granyaski Advanced Member

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#7 11 years ago
Tas;4846174An infinite number of clusters? I'm sorry but that would mean there is an infinite number of everything.:uhm: What theory is this?

Well remember that , according to science, the universe is expanding. Also remember that infinite is something we have invented to explain something we can't explain like sin curve of sin 90 is inifte positive and negative;) it's all bollocks I know:lol:




DnC

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#8 11 years ago
'LIGHTNING [NL;4846353']Does the universe have an edge? I don't think it does.

I believe in the theory is spherical like Earth. If you were to set off in a straight line in the Universe, you would end where you once began. PONDER THAT!




Serio Advanced Member

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#9 11 years ago
Rich19;4846289Space is big. Really big. You just won't believe how vastly hugely mindboggingly big it is. I mean you may think it's a long way down the road to the chemist, but that's just peanuts to space. Listen…[/QUOTE] It's so big that our minds can't even understand just exactly how big it is. [QUOTE='LIGHTNING [NL];4846353']Like I said, there is no 'edge' in our 3 spatial dimensions. There is however an 'edge' in time. If you can look back 13.3 billion lightyears then you will see the 'dark age' that followed the big bang. In this period the matter in the universe had not yet clumped together to form stars and galaxies. Here you will see nothing but darkness.

Ah. That was actually going to be my original question.




Tas

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#10 11 years ago
Serio;4846256You're right. It'd mean there'd be an infinite number of chances for a direct clone of you. Or a planet just like earth, also called earth, with a solar system just like this one.

I'm not inclined to accept this. If only for the fact that my puny intellect can only comprehend the meaning of the word "infinite" and not the physical reality of it. Without some source material on why this should be true, I'll pass. =p