Comment by nickpinkston

Very cool! There's some wild ideas about antimatter capture in space via giant arrays of superconducting magnets trapping naturally occurring antimatter.

Apparently, nanograms / micrograms is enough to create a "antimatter catalyzed" fission/fusion propulsion system with enormous specific impulse / efficacy.

PDF: https://www.niac.usra.edu/files/studies/final_report/1071Bic...