An artistic representation of antihyperhydrogen-4 — an antimatter hypernucleus made of an antiproton, two antineutrons, and an antilambda particle — created in a collision of two gold nuclei (left).

Antimatter can produce more energy than anything else we know of, but it’s very fickle. A new field analysis explains what we need in order to progress with antimatter propulsion. While an antimatter ...