Radioisotope Power Systems
GPHS Module (Display model)
A display model of the GPHS module.
Voyager 1 took this photo of Jupiter and two of its satellites (Io at left and Europa at right) as it approached its flyby encounter with the planet in 1979.
Jupiter, Io and Europa
Encircled in purple stratospheric haze, Titan appears as a softly glowing sphere in this colorized image taken one day after Cassini's first flyby of the moon on July 2, 2004.
-- Updated as of March 2021 Radioisotope Power Systems (RPS) have provided the power to explore, discover, and understand our solar system and beyond. This graphic shows the type and destinations ...
Flyby, Orbit, Rove, and Land
Neptune's largest moon Triton, is seen in this mosaic of images captured by Voyager 2 during the only visit thus far to the Neptune system.
Voyager's view of Triton
A mosaic was created from two high-resolution images that were captured by the narrow-angle camera when NASA's Cassini spacecraft flew past Enceladus
Geysers of Enceladus
The boulder-strewn field of red rocks reaches to the horizon nearly two miles from Viking 2 on Mars' Utopian Plain.
Viking 2 at Utopia Planitia
A color image of Arrakoth taken by the New Horizons spacecraft.
Enhanced-Color Composite Image of Kuiper Belt Object Arrokoth (2014 MU69)
An illustration of the three topics and the photos of the winners of the 2019-2020 NASA Scientist for a Day Essay Contest
Winners of the 2019-2020 Scientist for a Day Contest
A picture of Neptune was produced images taken by the Voyager 2 spacecraft.
Neptune Full Disk View
Dragonfly is a NASA rotorcraft lander mission that will explore the chemistry and habitability of Saturn's largest moon, Titan.
RPS 60th: Dragonfly Mission to Titan Shareable
The twin Voyager 1 and 2 spacecraft are exploring where nothing from Earth has flown before.
RPS 60th: Voyager Shareable
Illustration of Cassini flyng by the planet Venus.
Cassini Fly Past Venus - Illustration
NASA’s Perseverance Mars rover, including its Multi-Mission Radioisotope Thermoelectric Generator, is shown on sol 108 of its mission in this image.
NASA's Perseverance Near the Rim of Adziilii Crater
Scientist for a Day is an essay contest that challenges students in grades 5-12 to think like scientists.
Scientist for a Day Flyer - 2020-21
NASA's newest arrival on Mars, Perseverance will be collecting rock samples that a future mission will return to Earth.
RPS 60th: Mars Perseverance Rover Shareable
Apollo Lunar Surface Experiment Package (ALSEP) deployed on the lunar surface
ALSEP Deployed on the Lunar Surface
This image shows the closest face-on view of Neptune's Great Dark Spot captured by the Voyager 2 spacecraft during the only visit to the most distant of the eight major planets in our solar system.
Neptune's Great Dark Spot
Huygens probe following its successful descent to Saturn's smog-enshrouded moon, Titan.
First Color View of Titan's Surface
This series of images from NASA's Cassini spacecraft shows the development of the largest storm seen on the planet since 1990.
Chronicling Saturn's Northern Storm
There are no gas stations or mechanics in deep space. So, if you want the power to perform science in the deep, dark frontiers of our solar system, you must have an engine that is reliable for the...
Testing Maintenance-Free Engines That Power Science in Deep Space
The Multi-Mission Radioisotope Thermoelectric Generator for NASA'S Mars 2020 Perseverance rover is shown during a fit check with the rover at NASA's Kennedy Space Center in Florida on April 16-17, ...
Rover Power System
A false-color view, processed to reveal subtleties in the brightness of the overall plume that comprises the jets.
Jets of Enceladus
Asteroid Ida and its moon Dactyl. Scientists found the moon - the first discovered orbiting and asteroid - when the Galileo spacecraft flew past Ida in 1993.
Ida and Dactyl
The electricity for NASA's Mars 2020 rover is provided by a power system called a Multi-Mission Radioisotope Thermoelectric Generator, or MMRTG. The MMRTG will be inserted into the aft end of the r...
Power for Mars 2020
Technicians at NASA's Kennedy Space Center in Florida perform a fit check between the Mars 2020 Perseverance rover and its Multi-Mission Radioisotope Thermoelectric Generator on April 16-17, 2020.
Fitting the Rover's Power System
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Three student winners of NASA’s Power to Explore Challenge journeyed behind the scenes at NASA's Glenn Research Center after drafting the top papers in the national STEM essay contest.
STEM Essay Contest Winners Earn Close-Encounter Visit to NASA
NASA’s New Horizons spacecraft plans to observe Uranus and Neptune from its location far out in the outer solar system this fall.
All Eyes on the Ice Giants
The question of how Saturn developed its brilliant rings is still very much an engaging and open question.
All That Glitters: Saturn's Rings Estimated to Be "Young"
NASA selected three winners out of nine finalists in the second annual Power to Explore Challenge, a national competition for elementary through high school students featuring the power of radioisotopes for space exploration.
NASA Announces Student Winners of Power to Explore Challenge
NASA selected 9 finalists out of the 45 semi-finalists student essays in the Power to Explore Challenge, a national competition for K-12 students featuring the enabling power of radioisotopes.
NASA Names Finalists of the Power to Explore Challenge
NASA has selected 45 semi-finalist of the Power to Explore Challenge, a national competition for K-12 students featuring the enabling power of radioisotopes.
NASA Names Semi-Finalists of the Power to Explore Challenge