Speculative..... "Heavy" Antimatter
So the people at CERN have successfully produced anti-hydrogen. Why not anti-helium? Or anti-Carbon? Maybe there is a way to catalyze the fusion of antiprotons into heavy anti-nuclei for more efficient storage? Maybe muon-catalyzed anti-nucleic fusion inside a Penning Trap?
If the purpose is deep-space propulsion wouldn't this be a great idea?
