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Well, given lack of progress in fusion power, any near-term interstellar ship would need fission for its primary power source anyway. So then the question becomes how to turn that into thrust: ion drive, heating up gas with lasers, lightbulb... Longshot sounded like a fusion afterburner as it were, compared to just hot gas.

The logic is that we're not choosing between fission-fusion and fusion, we're choosing between fission and fission-fusion.

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james_davis_nicoll

James Nicoll Reviews

July 2025

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