The astronaut is standing on the Moon next to the landing module. He is extracting a round cylinder from a storage compartment on the side.

Fueling a Radioisotope Thermoelectric Generator (RTG) on the Moon

Apollo 12 astronaut Alan Bean extracts the fuel element of a Radioisotope Thermoelectric Generator (RTG) from storage on the lunar module on the Moon. The RTG was used to power the Apollo Surface Experiment Package (ALSEP).

Credits: NASA
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Image CreditNASA
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