Miles Space (RocketStar)

Miles Space is a US-based space propulsion technology company developing advanced in-space propulsion systems, operating under the RocketStar brand for its novel nuclear fusion-adjacent thruster technology. The company is developing the FireStar Drive, a thruster that uses aneutronic nuclear fusion — specifically proton-boron (p-B11) fusion reactions — as an energy source to super-heat and accelerate propellant, potentially achieving specific impulse values significantly higher than chemical propulsion while avoiding harmful radiation. Miles Space / RocketStar demonstrated the world's first nuclear fusion-boosted Hall-effect thruster on orbit aboard a SpaceX Transporter rideshare mission, firing in space and establishing initial flight heritage for its propulsion approach. The company targets commercial satellite constellation operators and deep-space mission planners who require high-efficiency propulsion with extended operational lifetimes.