What is the function of a compact, reliable nuclear fission reactor in a permanent Martian settlement?

Answer

To provide baseload electrical energy independent of atmospheric conditions

Nuclear fission is deemed necessary to reliably power critical 24/7 systems like $ ext{CO}_2$ separators and environmental controls without being affected by solar cycles or dust opacity.

What is the function of a compact, reliable nuclear fission reactor in a permanent Martian settlement?

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Can We Live on Mars? - YouTube

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