shipperx: (sci-fi)
shipperx ([personal profile] shipperx) wrote2008-11-20 02:08 pm
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The Time Before Time


Sounds like science fiction, doesn't it?

Did the Pre-Big Bang Universe Leave a Mark?

WHAT happened before our universe began? According to two theoretical physicists, if there was a universe before ours then it should have been remarkably similar to this one, with the same basic ingredients and properties. It may even be possible to see a faint picture of our parent universe imprinted on the sky.

Questions about a time before the big bang were once thought to be meaningless, because according to Einstein's general theory of relativity, the universe began at a singularity - a mathematical point with infinite density at which all calculations break down.

However, physicists now believe that the theory of relativity is limited and the effects of quantum mechanics would have blurred out the singularity just a little, so at a crucial moment the density of matter and radiation was not infinite. If this was the case, it becomes possible to try to work out what led up to that moment.

In cosmological models based on a theory called loop quantum gravity, our universe has a parent. Loop quantum gravity attempts to meld relativity with quantum mechanics by describing space-time as a constantly rearranging fabric of interconnections.  Full Article Here

[identity profile] molliemole.livejournal.com 2008-11-20 09:15 pm (UTC)(link)
This is something I've pondered about. Logic says the concept of "eternity" would be the same going both forward and backward in time. I've thought that something had to exist before the Big Bang to make it happen. I have no problem with that something being God, but I also have no problem thinking that this isn't the first universe he created. Or not.

[identity profile] merrymaia.livejournal.com 2008-11-20 10:11 pm (UTC)(link)
Fascinating!!!
rahirah: (Default)

[personal profile] rahirah 2008-11-21 05:31 am (UTC)(link)
I just read another article about that!