U.S. Plans to Launch Nuclear Fission-Powered Spacecraft to Fly by Mars by End of 2028
The National Aeronautics and Space Administration (NASA) is advancing the Space Reactor-1 "Freedom" (SR-1 Freedom) mission, with the goal of launching a nuclear fission-powered spacecraft by the end of 2028 to validate deep-space nuclear electric propulsion technology. According to existing mission documentation, the mission plans to fly by Mars in 2029 and deploy the SkyFall payload. The SR-1 Freedom is neither a fusion spacecraft nor a crewed Mars vehicle. Its core experiment is to operate a small uranium fission reactor, an energy conversion system, and Hall-effect thrusters in coordination beyond Earth orbit, accumulating engineering data for future higher-power deep-space missions...
2026-08-24
