3 ms·

What's the key point regarding how we would get a bajillion times more anti-matter than we can now generate, and without expending all the energy we now expend

• modeless 11mo ago
  His point seems to be that we haven't yet seriously tried optimizing for energy efficiency of producing antimatter. It's a call to action. If we actually tried it's plausible that we could get to a level that, while still fantastically inefficient in an absolute sense, would still be worthwhile for spaceflight propulsion, where energy density is vitally important. As far as I know, antimatter is the most energy dense fuel possible in known physics by many orders of magnitude. Also he proposes a few ways that antimatter could be practically used for propulsion, including as a catalyst for fission which seems interesting.