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NASA Is Running Out Of Plutonium For Spacecraft, But A New Plan Could Help

NASA is running out of plutonium. The space agency uses Pu-238 to fuel many of its deep space missions, including New Horizons, Voyager, the Curiosity rover, and the Mars 2020 rover. These long-lasting batteries were the byproducts of nuclear weapons manufacturing, and now that the world is making less of those, NASA's stockpile of plutonium fuel is dwindling.

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