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this post was submitted on 09 Apr 2025
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Science Memes
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Yup. If, for example, you're designing a deep space mission, where every gram counts, there's a conversation to be had about whether it's cost effective (and appropriate risk) to send nuclear reactors and fuel aboard those spacecraft.
Or using modern engineering, whether an aircraft carrier should be powered by nuclear fission or internal combustion of hydrocarbons.
Usually space craft have relatively light power needs so why bother with a whole-ass nuclear reactor when an RTG is smaller, lighter, and has no moving parts? They're a pretty common choice for space probes, for example.
https://imgs.xkcd.com/comics/plutonium.png
We're actually running into shortages of Plutonium 238. Which is seriously compromising deep space missions.