The nuclear renaissance is just getting started and SMRs are the next frontier. These companies are some of the best ways to ...

A prototype ion engine that uses lithium vapor as a propellant has aced its first tests, achieving 25 times more power than ...

Space rockets may soon use nuclear-powered engines based on nuclear thermal propulsion, or NTP technology. While no nuclear engine will fly this year, the field is approaching a major milestone, with ...

In the context of this conversation we're talking about thermonuclear explosions in space for power generation, not propulsion. So it being heavy is fine. Orion was meant to be propulsive so that ...