Antimatter/Matter

[nchen24]

Hey everyone, I'm new to this forum, but that's not the purpose of this post!

 

I was reading the article "The Universe" (by Michael S. Turner; Scientific American, Sept. 2009), and it says "at some point it [the universe] developed a slight excess of matter--about one extra quark for every billion anti-quarks."

 

Is there proof that there is more matter than anti-matter in the universe?

[insane_alien]

yes there is proof.

 

we can't see any with our telescopes.

 

if antimatter was in abundance anywhere then it would be throwing off massive amounts of gamma rays from where it borders on regions of normal matter.

 

we cannot detect a strong gamma source with the properties that would indicate such a scenario so we are fairly sure that there isn't any region of space which is primarily anti-matter.

[nchen24]

But space is not made of "normal matter," so if merely space separated matter and anti-matter, couldn't there be a "patch" or area of space composed of primarily anti-matter?

[insane_alien]

yes, but at the border between the region of normal matter and antimatter there will be gamma rays produced.

 

space isn't as empty as it is made out to be and there are trace quantities of verious plasmas everywhere. inbetween galaxies there are a few particles per meter cubed. this isn't very dense at all but there would be many cubic light years of space where mater and anti-matter would interact and release gamma rays. this would be very very very obvious to our telescopes.

[Airbrush]

...this isn't very dense at all but there would be many cubic light years of space where matter and anti-matter would interact and release gamma rays. this would be very very very obvious to our telescopes.

 

Interesting concept Mr. Alien.

 

If this Big Bang area of expansion has a limit, and there are multiple Big Bangs separated by "hyperspace" (region of NO atoms or particles of any kind) then the next "bubble" universe could be an antimatter universe because it had a slight over abundance of antimatter?

[insane_alien]

Airbrush, lets stick to the accepted science in this thread. if you wish to discuss multiple universe hypotheses then please open another thread.

 

as to your concept of "hyperspace" all you are describing is an area of complete vacuum. this has not been observed at all.

[nchen24]

Key word being observed, isn't it possible... actually, more appropriate would be likely, that there are unobserved parts of the Universe?

[insane_alien]

well, if there is an unobservable part of the universe, it can't intereact with us. and nothing in the observable universe can get to it either. including antimatter.

 

so to say that thats where the antimatter is still doesn't make sense as the antimatter from in the same place as the normal matter. if there was a substantial amount of antimatter left over from the big bang it would be highly visible

[Airbrush]

"...if there is an unobservable part of the universe...."

 

IF there is? Certainly there is, we know there are unobservable regions of the universe, simply beyond our visual horizon, the CMB. What is beyond that?

 

Antimatter universes could exist if in a multiverse medium there are Big Bangs, here and there, now and then, on unimaginably vast scales of space and time. Among these budding universes are Big Bangs that had more antimatter than matter, so those became antimatter universes.