posted on Apr, 18 2008 @ 03:02 AM
Originally posted by trilateral
lol Here's me thinking anti-matter and dark matter were the same thing !!!
Anti-matter is the opposite of matter
Dark matter is a hypothetical form of matter that doesn't emit or reflect enough magnetic radiation to be observed directly. (thanks wikipedia
So to anwer your question, I don't really understand antimatter. I'm sure some theoretical physicist could theorize (lol).
Speaking of theorizing, imagine antimatter is being leaked into our matter universe from an antimatter universe. Thats a cool thought, ain't it?
I wouldn't necessarily call antimatter the opposite of matter. It is, in almost all respects, very similar to regular matter. There are anti protons,
anti neutrons, and positrons, which are direct equivalents to protons, neutrons, and electrons, except that they carry the opposite charge (except, of
course, neutrons. Well, the negative of zero is still zero, but that's trivial).
Antimatter has ordinary mass and produces and is affected by regular gravity exactly the same as regular matter. Besides the fact that the
antiparticles carry the opposite charge of their corresponding particle, the only other real notable thing about them is that they will annihilate
their corresponding particle, releasing their combined mass worth of energy, in the form of gamma rays, which is of course, given by E=mc^2.
There could well be an antimatter universe, but we don't really know near enough to begin speculating on alternate universes. There is nothing known
preventing antimatter galaxies from existing, but it's fairly certain that they don't, because an antimatter galaxy would be constantly giving off
gamma rays as it traveled through the stray hydrogen in the near vacuum of the intergalactic medium. We don't see anything like that, so it's fairly
certain that there are none.
It's really not known why there is so much more matter in the universe than antimatter. If the universe was all antimatter, it would probably be
functionally similar to ours.
but at CERN's quote of $300 billion per milligram, I doubt it's going to be weaponized anytime soon.