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If there are = amounts of matter and anti matter in the universe then why after the big bang did some matter get 'left over' i.e why didn't everything completly anhilate into photons ?

Also atoms are made up of =parts of protons and anti protons why do they not anhilite ?

2006-11-20 00:23:27 · 5 answers · asked by Haydn 4 in Science & Mathematics Physics

5 answers

There is no reason to believe that there weren't equal amounts of matter and antimatter after the big bang. However, there is a difference between the way matter and antimatter interact. It has to do with a complex symmetry in physics called CP (charge-parity).
The difference allowed abut one in every billion matter particles to avoid annihilation.

2006-11-20 00:59:06 · answer #1 · answered by Gene 7 · 0 1

Where did you get the idea that atoms have protons and anti-protons? They do not!!!
As for the extra matter than anti-matter...There should have been equal amounts created during the big bang. Where is the extra antimatter? Numerous possiblities
1) Dark Matter
2) Some far distant location in the universe away from all matter.
3) Another dimension. (my favorite)
4) Another universe?

2006-11-20 08:40:12 · answer #2 · answered by The Cheminator 5 · 1 0

The current theories suggest that matter won out by sheer chance, due to a very slight (1 in a billion) imbalance in the statistics at the quantum level.

All matter has an equivalent anti-matter particle. The Anti-proton exists but is very short lived as it is annihalated with the first proton it meets. The anti proton was discovered in 1955 in Berkeley.

2006-11-20 08:55:45 · answer #3 · answered by Andrew H 2 · 2 0

Actually after the Big Bang there was more "Matter" than anti-matter, hence why most of the antimatter was annihilated and we were only left with what we call normal matter.

2006-11-20 08:31:09 · answer #4 · answered by Stuart T 3 · 1 1

there is no such thing as anti proton

2006-11-20 08:43:32 · answer #5 · answered by venus11224 6 · 0 2

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