The Big Bang Bang Bang....

ElectricAye

It seems that Roger Penrose and friends have come across some interesting data suggesting multiple bangs during the big bang era... hmmmm...

http://www.physorg.com/news/2010-11-scientists-glimpse-universe-big.html

Original article can be found here:

http://arxiv.org/pdf/1011.3706v1

Dr_Acula

I love this cutting edge research.

In moments of extreme lucidity (ie no alcohol for several days), I sometimes have pondered the question of Time and the Big Bang. Consider falling into a black hole with lots of gravity. To an outside observer the person falling in takes forever. To the person falling in, it happens in normal time (I think that is how it goes, anyway).

Now consider being around at the time of the big bang. To the person inside the big bang, time flows differently to a hypothetical outside observer.

One day I will think this through properly and work out which way round the time is, and whether indeed the 'dawn of time' is an illusion, and maybe it took longer (or shorter) to an outside observer.

Maybe there was a big crunch before the big bang? Just after the big bang, photons could not escape but gravity could. Both travel at the speed of light. Does this mean the gravity has travelled further than any photons? Will there be enough gravity to slow down those photons, as presumably you need to collect everything, matter, photons, if the universe is to be cyclical. But what if the neutrinos escape each time?

This paper is very interesting. Thanks for the link.

Humanoido

I find this interesting - the consideration that as time approaches infinity and slows down during late evolution, every possible combination type of Universe can be formed. Multi-bang is just one possible combination. Also interesting, like clusters of galaxies in one Universe, there may be clusters of Universes that coexist in different regions of space-time, where laws of physics are different from ours.