Scientists at Europe's nuclear research centre have, for the first time, managed to trap
stable "anti-matter" particles.
In the above model, we can see an hydrogen atom and an anti-hydrogen atom.
in the anti-hydrogen atom, we can see a positron orbiting an anti-proton, as
opposed to the hydrogen atom, where we can observe an electron
orbiting a proton.
Most scientists agree that when the Big Bang occured, matter and anti-matter should
have been produced in equal quantity. Up to now, almost everything we can observe
from the earth is made of matter rather than anti-matter.
This apparent imbalance is named "Baryon asymmetry.
Using the "Alpha experiment", scientists are able to hold antihydrogen particles for
as long as one tenth of a second, giving time for measurement.
So far, 38 antiatoms have been trapped for study.
Scientists are now closer to the truth about anti-matter and to the answer to:
Why so much matter and so few anti-matter?