How abundant is anti matter in our universe?

Answer 1

Anti matter is, of course, not dark matter. Anti matter is the antithesis of matter by some measure. For example, an anti electron is called that because other than its charge, which is positive, it is exactly like an electron with its negative charge. Another name for anti electron is positron.

Although laboratory experiments where matter is created show that anti matter is always concurrently created with the matter, they also show that anti matter does not exist long before it disassociates into photon energy and some other subparticles that are matter, not anti matter. [See source.] As a consequence, any naturally occuring anti matter is very short lived. Thus, anti matter is quite rare in its natural state in our known universe.

Also, to set the story straight, dark matter/energy makes up about 95% or so of the total mass in our known universe. [See source.] Further, dark matter/energy has been observed; so it is no longer just a theory. But, again, dark matter, which dominates our universe, is not anti matter, which is rare.

Answer 2

It is extremely rare. It was likely just as abundant as matter in the very early universe. However, it has been shown, but not understood yet, that antimatter decays quicker than matter. That might be responsible for the assymmetry in the present universe. It is an open question, but is probably due to the natural facster decay that produced an early assymmetry that eventually led to the annhiliation of the imballanced antimatter that hadn't decayed. There has been no detetected abundance of antimatter in the universe, particularly on the outer fringes of galaxies and other cosmological ensembles.

Antiparticles are more prevalent. They are produced in nuclear decays. We see an appreciable current of them in cosmic rays. However, they have never been observed to naturally bind into even the most basic atomic structures to form antimatter.

Answer 3

Due to an initial and slight asymmetry between the amounts of matter and antimatter produced in the early universe almost all of the antimatter has been annihilated. The amount that is left is too rare to be detected, essentially there is no naturally occurring antimatter left in the universe.

Answer 4

According to Hawking's Big Bang theory the universe is compromised of an equal amount of matter and antimatter.

Answer 5

Antimatter is very rarely seen in nature. It is most often created in particle accelerators.

Answer 6

anti matter meaning dark matter? If so, then theoretically it comprises 85% of the universe.

Answer 7

I think it's quite abundant because my socks keep disappearing.