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Radioisotope Power Systems (RPS)

NASA’s Curiosity Rover Captures Colorful Clouds Drifting Over Mars
5 min read

While the Martian clouds may look like the kind seen in Earth’s skies, they include frozen carbon dioxide, or dry…

Article
Perseverance’s Multi-Mission Radioisotope Thermoelectric Generator on Mars
1 min read

NASA’s Mars Perseverance rover acquired this image using its onboard Right Navigation Camera (Navcam). The camera is located high on…

New Horizon’s Radioisotope Thermoelectric Generator
1 min read

New Horizons carries seven scientific instruments and a radioisotope thermoelectric generator. The spacecraft weighs 1,060 pounds.

Radioisotope Power Systems Science Destinations
1 min read

Radioisotope Power Systems (RPS) have provided the power to explore, discover, and understand our solar system and beyond. This graphic…

Lightweight Radioisotope Heater Unit
1 min read

Radioisotope Heater Units (RHUs) are small devices that use the decay of plutonium-238 to provide heat to keep a spacecraft’s…

Fueling a radioisotope thermoelectric generator (RTG) on the Moon
1 min read

Apollo 12 astronaut Alan Bean extracts the fuel element of a radioisotope thermoelectric generator (RTG) from storage on the lunar…

Voyager’s Radioisotope Thermoelectric Generator (RTG)
1 min read

Each of NASA’s Voyager probes are equipped with three radioisotope thermoelectric generators (RTGs), including the one shown here at NASA’s…

2025 Power to Explore Challenge Explainer Video
1 min read

Welcome to this informational session all about the NASA Power to Explore student writing competition. It's all about the competition…

NASA to Explore Two Landing Options for Returning Samples from Mars
3 min read

To maximize chances of successfully bringing the first Martian rock and sediment samples to Earth for the benefit of humanity,…

News Release