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Profile Rod
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Message 81700 - Posted: 26 Feb 2008, 2:37:52 UTC

It looks like we live in interesting times. I hope the infomation we gathered so far and in the near term (from the universe's perspective) can be preserved...

End of Cosmology

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Message 81707 - Posted: 26 Feb 2008, 3:58:31 UTC

I just have add an interesting slide show of the night sky of what the possible future holds

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Message 81748 - Posted: 27 Feb 2008, 1:43:33 UTC - in response to Message 81700.

It looks like we live in interesting times. I hope the infomation we gathered so far and in the near term (from the universe's perspective) can be preserved...

End of Cosmology

I think you can have an end to the cosmos, but not an end to cosmology...

Do any of the following questions/ramblings make sense?

Did a big bang occur once that we know of, and did it happen in a void? What was the nature of the void? Is there a difference, on a large enough scale, in the sense of quantum mechanical coherence, between something infinitely empty and cold and something infinitely full and hot? Can it be said of a void, when the universe has expanded to the point where galaxy clusters are receding from each other at near-light speed, that observation of the void between them is no longer physically possible, and that the void therefore can be in a coherent superposition of two possible states, either empty/cold or full/hot?

Those two conditions are equivalent in terms of isotropy and homogeneity, and temperature is a meaningless quantity other than it's infinite one way or the other or both. Resolution of the superposition of states occurs across and through the entire void, faster than light, which manifests as an inflationary epoch, and a hot dense universe condenses (precipitates into spacetime?) with a 'bang', perhaps seeded or imprinted with any galactic ejecta left in the void as the accelerated expansion of the previous universe hastened in latter stages...

I'm sure I read somewhere (when the rules of quantum mechanics were being formulated) that one of the physicists remarked something along the lines that if there were no rules or fundamental principles prohibiting the possibility of something then it can be expected to occur with some probability. So there's absolutely nothing in the empty/cold void to prohibit the possibility of the dense/hot state from occurring. The only rules governing either possibility are the abstract attributes of mathematics, e.g., just the notion of symmetry necessarily implies an equals sign and equivalent quantities to either side of it, and regardless of how it's expressed by us or understood to be, the abstract nature of maths is a foundation for everything that physically can and cannot happen, and this notion of maths, resolving into fundamental principles and the laws of physics, is more real and substantive than any void, and indeed the nature of it doesn't change from one 'bang' to the next...
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Message 81753 - Posted: 27 Feb 2008, 2:33:38 UTC

You pose interesting questions.

I hope you can put up with my ramblings

I have to say cosmology as discipline will probably not end but it will change. There will always be questions about this void.

The article stated that there is only a finite amount of information that can be gathered about the observable universe. As our observable universe changes information will be lost. At some point in the future, if humanity has to start over, Information will be lost

We can theorize to determine our direction to investigate ( I believe cosmology will survive this way) but without direct evidence, it is just a theory.


Personally I think even in this epoch. We are to close.. We are to far away...
to observe.

It gives new meaning to observing outside the box :-)

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This material is based upon work supported by the National Science Foundation (NSF) under Grants PHY-1104902, PHY-1104617 and PHY-1105572 and by the Max Planck Gesellschaft (MPG). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the investigators and do not necessarily reflect the views of the NSF or the MPG.

Copyright © 2016 Bruce Allen