this post was submitted on 01 Feb 2026
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Science Memes

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[–] ExLisper@lemmy.curiana.net 100 points 2 days ago (44 children)

Found a calculator: https://www.calctool.org/relativity/space-travel

Assuming we want to accelerate at a constant 1g for half of the travel and then brake at 1g for the second half of the travel we would need 151 years to get there but only 9.794 years would pass on the ship. Depending on the mass of the ship we would need coupe million/billion tons of fuel (anti-matter).

[–] Grandwolf319@sh.itjust.works 3 points 2 days ago

I’m guessing you probably go faster than 0.9C after six months, given that the difference is 1 year.

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