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Author Topic: rettaM itnA  (Read 1891 times)
« on: June 06, 2011, 07:58:42 PM »

S'funny, I thought the standard big bang model postulated that there was a slight asymmetry in the laws which resulted in a one in a billion excess of matter over anti matter, after pairing up and  annihilating, our universe was all that was left.

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« Reply #1 on: June 06, 2011, 11:54:59 PM »

It seems an odd conclusion to draw, from my simplistic non-mathematical viewpoint. Scientists have demonstrated ('face of god') that even in the extremely early moments of creation, asymmetry existed, and therefore, would it not be possible for asymmetry to exist in the distribution of particles/antiparticles, or perhaps some force existed which separated them to a certain extent (even if only a very small amount survived to be separated). So distant galaxies could be made entirely from antimatter - how would we know? I assume it would be impossible to tell the difference from a telescopic view.

By the way, I strongly recommend 'Through the wormhole with Morgan Freeman'  on Discovery. Well worth watching.
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« Reply #2 on: June 11, 2011, 08:20:03 PM »

I think after the creation of all matter (and anti matter) particles finished, about t=3 minutes, the universe was in a super hot compressed state or plasma for 300000 years, all the particles in existence would be interacting intensely, therefore all the antimatter particles would have been annihilated. The theories seem to support the idea that all the matter in existence today is of one type or another, but not a mixture.

I seem to remember in the depths of my memory reading that it would be possible to determine which type of matter a distant Galaxy was made of, annihilation events also release very high energy Gamma radiation which would be visible from vast distances, if there is significant amounts of anti matter in the universe, we seem to be missing that radiation.

I think..................... tumble

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