Initial tests in Nevada on a compact nuclear power system designed to sustain a long-duration NASA human mission on the inhospitable surface of Mars have been successful and a full-power run is scheduled for March, officials said on Thursday.

Officials from the National Aeronautics and Space Administration and U.S. Department of Energy, at a news conference in Las Vegas, detailed the development of the nuclear fission system under NASA's Kilopower project.

Months-long testing of the system began in November at the energy department's Nevada National Security Site, with an eye toward providing energy for future human and robotic missions in space and on the surface of Mars, the moon or other solar system destinations.