What is the Universe expanding into..

Do you think there was anything before the big bang?

  • I don't think there was anything before the Big Bang

    Votes: 56 12.5%

  • I think something existed before the Big Bang

    Votes: 200 44.7%

  • I don't think the big bang happened

    Votes: 54 12.1%

  • I think the universe is part of a mutiverse

    Votes: 201 45.0%
  • Total voters
    447
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#9,962
Back,so I am thinking with all this too and fro , there is no stimulation factor,so there must have been a space prior to whatever because you cant make something from nothing,so infinity is infinity it cant expand as such so is the universe expanding? No its maturing and just filling out ,
so my eyes work at the speed of light my ears the speed of sound and my mind with its 27 varients is faster than a tachyon,and I can go back in time with sight sound and smell,its called memory,where as a tachyon will be looking for more of its kind because it is lost,I am sure like everything else they work in numbers
 
#9,964
it was just a term I mean the whole argument is about corresponding minds I think the English language suffers through the ability to translate a thought to another or maybe not it could be my lack of education ,but its not infinity its the space in between to infinity lotsa space
 
#9,966
grusome said:
maybe you are right I might have misunderstood "the metric expansion of space" maybe its not all over but singularly? not sure
Click to expand...

How many dilithium crystals did you have for breakfast?

A singularity has no dimensions.... well.. no dimensions that can be determined from the space in which it is a singularity. Perhaps WITHIN the singularity there are many other dimensions, sort of like the Borg Star, except that we don't know.

Question.. within a singularity, what does the outside space time look like?
 
#9,968
grusome said:
so infinity is infinity it cant expand as such so is the universe expanding?
Click to expand...

grusome, we don't actually know that the universe is infinite.

Our best measurements indicate that space is neither negatively or positively curved, but 'flat' on the largest scales.

https://www.howandwhys.com/the-universe-is-flat/

If we assume that our current laws of physics are correct, we can set limits on how large, at least, the Universe must be before it curves back on itself.

The lower estimate of the size of the universe is 18 trillion light-years in all directions. That's huge, but it’s still finite.

The higher estimate (assuming the universe remains flat out that far) is 37 trillion light-years in diameter.
 
#9,972
Read the link in my post, TNT.

The curvature is associated with a critical density.

If the density of the universe is higher than critical, then space has positive curvature, and the expansion of the Universe will be replaced by compression in the future.

There's your Big Crunch again! 😱
 
#9,974
TNT said:
Why must it curve back?
Click to expand...

It 'could' curve back, it depends on the topology of the universe.

If the topology was that of a hypertorus, the universe would curve back on itself while still being spatially flat.

Steve is your man when it comes to topology!
 

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#9,975
".....at least, the Universe must be before it curves back on itself.

The lower estimate of the size of the universe is 18 trillion light-years in all directions. That's huge, but it’s still finite.

The higher estimate (assuming the universe remains flat out that far) is 37 trillion light-years in diameter."

- - - -

These three sentences has no other alternative... ;-)

//
 
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