Antimatter is exciting stuff, combustible and incredibly dangerous – a bit like nuclear that way – and one wouldn’t be advised to use it as fuel source, except that everyone invariably does. In science fiction. So, a bit like nuclear that way. The same stuff doesn’t tend to be nearly as inspiring in the cold, harsh clinical light of theoretical science. But that doesn’t mean the reality, which tends to give official science a wide berth, isn’t less than scintillating. Physics tells us antimatter is made up of antiparticles of reversed charge, parity and time. It will tell you, if