Could astronauts travel to Mars on nuclear-powered rockets? These scientists want to make it happen The team's design uses fission reactions involving uranium to heat propellant. Astrobitica September 24, 2025 (Last updated: September 24, 2025) 1 minute read The team’s design uses fission reactions involving uranium to heat propellant. About the Author Astrobitica Administrator Visit Website View All Posts Post navigation Previous: The Search for Australia’s Hidden Impact CraterNext: Finding Exomoons Using Their Host Planet’s Wobble