Plutonium-238's Path around the United States

Plutonium-238's Path around the United States
Plutonium-238's Path around the United States The Department of Energy depends on three different national laboratories to create, store, and assemble radioisotope power sources for NASA. This graphic traces the circular journey of the Neptunium-237 starter product to the complete Radioisotope Thermoelectric Generator (RTG) containing Plutonium-238 fuel. Loren Roberts for The Planetary Society