‍NASA is building SR-1 Freedom, a nuclear electric propulsion spacecraft, launching to Mars in 2028. 

We are proud to announce this during the 250th year of the United States, the mission’s name reflects the spirit of American innovation and exploration. 
This mission will bring America’s nuclear power capabilities to space and deliver the Skyfall payload of Ingenuity class helicopters to explore the Red Planet.  
 
Nuclear power and propulsion will be the key to undertaking crewed missions to Mars and exploring the outer solar system.  
 
Space Reactor-1 (SR-1) Freedom will make the next giant leap and accomplish a key component of the National Space Policy, bringing nuclear to space alongside U.S. Department of Energy.