NASA has moved ahead with a key power system for SR-1 Freedom, its planned nuclear-powered journey to Mars, as it works toward a late-2028 launch.
In an October 20 update, the agency said Sierra Lobo will supply the equipment that turns reactor heat into electricity. Idaho National Laboratory is developing the reactor that will be integrated with that system.
The arrangement addresses a central engineering challenge: producing electricity aboard a spacecraft to run its systems and electric propulsion. NASA says the reactor will stay inactive until the vehicle has left Earth orbit.
The announcement describes development and contracting progress. It does not mean the spacecraft has launched or demonstrated its propulsion system in space. NASA says safety reviews and oversight will continue through development.
SR-1 Freedom is intended to carry SkyFall, a separate science mission built around three Mars helicopters. NASA describes the rotorcraft as successors to Ingenuity, designed to examine the planet’s geology and climate history from the air.
The helicopters would survey terrain and investigate potential underground ice, helping researchers understand where water may remain. Their observations are also intended to identify places that could be useful and safe for later missions.
That gives the project two connected ambitions: testing a different way to power deep-space travel and delivering aerial scouts to the Martian surface. Both remain future objectives, with the flight currently scheduled for late 2028.
For readers following the mission, the next distinction to watch is between progress on individual components and evidence that the integrated spacecraft is ready for flight.
Sources
NASA’s October 20 development update; NASA SkyFall mission overview.