Antimatter and Antistars?

payndz asks: "I'm currently writing an SF novel, and came up with a weird thought for a piece of background flavour that, if there's any scientific basis for it, might get expanded into a larger element. The most up-to-date theories for the creation of the universe 13.7 billion years ago (give or take...) suggest that at the Big Bang, matter *and* antimatter were created. Over time, the fact that there was slightly more matter than antimatter means that mutual annihilation has left a universe of matter. (I'm not going to open up the whole can of 'dark matter' worms, unless somebody wants to...). I have a 'what if' question, which since Hubert Farnsworth isn't around I thought would get some good responses here: what if, rather than antimatter being annihilated by matter in the universe at large, there are 'clumps' of both matter and antimatter making up the universe? Since our clump is almost entirely matter, billions of LY away could there be galaxies made up of antimatter?More to the point, what physical properties would these galaxies have? Would a star made of antimatter function in the same way as a matter star, and would its emissions be made of antiparticles? Can you have anti-photons, and if you could, what impact would they have on any matter they illuminated? Could life evolve in an antimatter environment?"

Comments

Don't go there

[the_DaRKaNGLe]

It has been done before, about a million times in one form or another. Somhow this article triggered some Startrek flashback...

Physical properties of antimatter galaxies

[baywulf]

"Since our clump is almost entirely matter, billions of LY away could there be galaxies made up of antimatter?More to the point, what physical properties would these galaxies have?"

One thing is for sure. There would be a person identical to you except they would have a goatee and no sleeves on their uniform.

Re: Physical properties of antimatter galaxies

[Black Parrot]

> One thing is for sure. There would be a person identical to you except they would have a goatee and no sleeves on their uniform.

That's how everyone looks here. Where the heck are you posting from?

Heyyyy

[Anonymous Coward]

I am fucked up and that was quite the idea for a book. I consider it quite entertaining.

Yum

[sporty]

Just don't put the pasta near the anti pasta. That could be bad.

/rimshot

Some differences

[Lady Jazzica]

There are a few differences between an antimatter galaxy and a matter galaxy like our own. For instance, in an antimatter galaxy, the element Antimony is called "Mony". They use it as a means of facilitating the exchange of goods and services. Also, in antimatter England, they drive on the right side of the road.

Re:Shameless Plagiarism

[SEWilco]

Check out CPT violation on the net. Feynman is 40 years out of date on this topic.

He is having difficulty getting his updates past the Editor.

Re:Some info as i remember

[Anonymous Coward]

Congratulations, you've crossed the matter/antimatter boundary with a starship. Now what do you do?

I'm going to Anti-Disney World!!

Re:silly constraints

[Radical Rad]

Since you are writing fiction, it doesn't really matter whether it's real at all or not. All real physics are only just theory, so anything you can dream of should be possible in your fantasies!

You're Dubya's speech writer, aren't you???