XinfiniteX said:
For the non-science people out there... like me, what does this mean? Is this anything like that thing in Angels and Demons?
Well, anti-matter is exactly what the name would suggest: it's matter, but the opposite. When matter and anti-matter come in contact with each other both dissolve in an enormous blast of energy, which, if uncontrolled, would be pretty much a gigantic explosion, destroying everything within a certain radius - depending of how much anti-matter and matter came into contact with each other.
However, with a bit more advanced technology, it would also make a crackin' rocket fuel, as, say, a litre of anti-matter and matter would be able to propel your rocket about a million times further than a litre of traditional rocket fuel.