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Six decades after the launch of the first nuclear-powered space mission, Transit IV-A, NASA is embarking on a bold future of human exploration and scientific discovery. This future builds on a proud history of safely launching and operating nuclear-powered missions in space.
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Logo celebrating 60 years of RPS space exploration
After 60 Years, Nuclear Power for Spaceflight is Still Tried and True
The Department of Energy and NASA, have reached an important milestone towards reestablishing the ability to fuel future space exploration missions.
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A Step Forward in Reestablishing the Radioisotope Power Systems Supply Chain
Why we use use radioisotope power systems to explore and answers to many other questions about the RPS program.
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Man installing parts on a spacecraft.
Frequently Asked Questions

Why RPS?

For more than five decades, radioisotope power systems have played a critical role in the exploration of space, enabling missions of scientific discovery to destinations across the solar system. › More

Power and Thermal Systems

Technology

Missions

Why RPS?

For more than five decades, radioisotope power systems have played a critical role in the exploration of space, enabling missions of scientific discovery to destinations across the solar system. › More

Power and Thermal Systems

Technology

Missions

MMRTG Mission Planner Data Package

Available to qualified applicants.

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  • Images

    Explore some of the amazing views of distant worlds that RPS technology has enabled.

  • Missions

    Read about the exploration enabled by radioisotope power systems.

  • Videos

    Watch videos that explain RPS technology and showcase mission highlights.