Thanks AJ for your excellent replies. That quantum foam thing has tripped me up and you helped very much to clarify!
As to the antimatter, clearly I watch too much Star Trek.
Quote:
Originally Posted by dreadgeek
As far as the anti-matter is concerned, it's not that ANY anti-matter would cause massive annihilation it's that sufficient quantities of it would. A small number of anti-protons encountering protons would annihilate one another and release a lot of gamma radiation. A large number of anti-protons would create a far larger release of energy with more destructive power. Fortunately, antimatter is very rare at this stage of the universe.
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Thanks again!
PS this thread is SO giving me a brain wood