Antimatter galaxies?

Rev. Green | 21:41 Tue 28th Dec 2010 | Science

2 Answers

Why is the amount of matter and the amount of antimatter though to be different? Couldn't the local group of galaxies be just a "minor", local fluctuation ( of 10^40 tonnes!) in the amount of matter?

How much pressure is there at the bottom of the Marinas trench?

everything has 1 billion heartbeats

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jake-the-peg

Best Answer

Yes Rev I think that's possible. Of course individual galaxies are colliding all the time. If a matter and antimatter galaxy were to collide we'd probably notice! Given this and the sheer number of galaxies out there I'd probably bet against anti-matter galaxies but I'd not exactly be amazed if we caught a collision between a matter and anti-matter galaxy

08:55 Wed 29th Dec 2010

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R1Geezer

A all the matter/antimater was close enough to annihilate just after the big bang. What is left is just the tiny surplus of matter over antimater.

jake-the-peg

Yes Rev I think that's possible.

Of course individual galaxies are colliding all the time. If a matter and antimatter galaxy were to collide we'd probably notice!

Given this and the sheer number of galaxies out there I'd probably bet against anti-matter galaxies but I'd not exactly be amazed if we caught a collision between a matter and anti-matter galaxy

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