Energy and thrust are not equivalent. There’s hardly any limit to how much energ... | Hacker News

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		thehappypm 6 months ago \| parent \| context \| favorite \| on: Feasibility study of a mission to Sedna – Nuclear ... Energy and thrust are not equivalent. There’s hardly any limit to how much energy you can generate in space (for example using a nuclear reactor), but fuel is the limiting factor.

TorKlingberg 6 months ago [–]

By "fuel", do you mean reaction mass (stuff that shoots out the back of the rocket) or energy source?

A nuclear reactor in space would require an enormous heat sink to get useful energy out.

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