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0 pointslucianbr2y ago0 comments

I think hydrogen can be simply found in space, along the way. Not sure about the concentration of deuterium and tritium. I suspect once you get to 1% of c, you can find enough.

If you need to lift all the fuel from Earth, sure, antimatter all the way. Although, they already suggest making it in space for some reasons.

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throwup2382y ago

> I think hydrogen can be simply found in space, along the way. Not sure about the concentration of deuterium and tritium. I suspect once you get to 1% of c, you can find enough.

That's called a Bussard ramjet. Long story short:

> A 2021 study found that, while feasible in principle, the practical construction of a useful Bussard ramjet would be beyond even a civilization of Kardashev type II. [1]

[1] https://en.wikipedia.org/wiki/Bussard_ramjet

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