23 ms·
The title begs the question: when was the last time? Relevant excerpt: > Though many orbiters, deep-space probes, and Mars rovers run on radioisotope batteries
by WalterGR 4y ago
The title begs the question: when was the last time? Relevant excerpt:
> Though many orbiters, deep-space probes, and Mars rovers run on radioisotope batteries fueled by plutonium, the United States has only ever launched one nuclear fission reactor in space, called SNAP-10, in 1965.
Wikipedia: https://en.wikipedia.org/wiki/SNAP-10A https://en.wikipedia.org/wiki/SNAP-10A