Voyager uses a RTG. The USSR used some full-on nuclear reactors in space, but as... | Hacker News

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		Vecr on Nov 17, 2024 \| parent \| context \| favorite \| on: Voyager 1 breaks its silence with NASA via radio t... Voyager uses a RTG. The USSR used some full-on nuclear reactors in space, but as far as I know no one else publicly did. Edit: Yep, not sure how I forgot about that.

joeyo on Nov 17, 2024 [–]

The US put a fission reactor in space too. They did it first, in fact: https://en.wikipedia.org/wiki/SNAP-10A

Edit: it’s apparently still there and will be for a long time (!) albeit non-functional:

  > Decay date: April 3, 5966 (planned)

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