It is impossible to have a 100% vacuum because particles will just pop in to existance - as long as two particles with opposite properties (e.g. charge, spin, momentum, etc) come into being at the same time all the rules of the universe are conserved.
There is a theory that before the universe existed this happend as well, and that one time a small amount of vacuum was "caught" in one of these particles causing it to implode and giving rise to the universe.
I can't remeber who came up with this theory, and I think it one of the more likely ones, however it leaves a lot of questions unanswered.
Like what happend to the other particle ?? and is there an antiverse ?? :-P |