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A Stunning Fusion Rocket Could Cut Interplanetary Travel in Half—and We'll Try It in Just 2 Years
(www.popularmechanics.com)
this post was submitted on 31 Mar 2025
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https://web.archive.org/web/20250331084035/https://www.popularmechanics.com/space/rockets/a64256267/fusion-rocket-sunbird/
This worked, thank you.
Article only says doubly efficient, and H2 to He3 reaction.
To get to .9c we still need a couple million kg of fuel.
Even .1c needs about 40 000 kg of fuel, which is doable, but probably unfeasible.