Reliable Power. Relentless Propulsion.

Solar power fades in shadowed craters and distant orbits. Chemical propulsion has limited burn and would necessitate refueling. Nuclear systems offer what others cannot: sustained power, high-efficiency propulsion, and unmatched resilience in extreme environments.

Over 70 years of nuclear innovation to space— delivering safe, robust, and scalable nuclear systems that perform on-orbit and on-time.

Building on our leadership in satellite platforms and advanced space technologies, General Atomics Electromagnetic Systems is making nuclear power and propulsion a reality to advance compact, high-efficiency reactor solutions for cislunar operations and beyond.

Nuclear Thermal Propulsion

Efficient transport in cislunar space and beyond

General Atomics Electromagnetic Systems’ (GA-EMS) Nuclear Thermal Propulsion (NTP) fuels are setting the standard—proven to withstand high temperature hydrogen exposure and maintain structural integrity under neutron irradiation.

Nuclear Electric Propulsion

Propulsion and power for payloads

Nuclear energy for power and propulsion is clearly the best technology for missions requiring both high electrical power and thrust. In distinction from radioisotope sources, it can be turned off and run silent, with lifespans of 10 years or more in space. Nuclear electric propulsion enables faster, efficient space travel without the need for multiple refueling operations.

Fission Surface Power

Powering space outposts

Future missions to the Moon and Mars will be establishing outposts that support human life and supply reliable energy for activities such as mining, water extraction, research and other supporting activities.