This is using the fact that at 1g acceleration, one will quickly approach the speed of light relative to its starting rest frame and time dilation will give the astronaut a _very long_ life relative to that frame.
replyThe closer to lightspeed you get the more shit you would collide with. I think you would reach an equilibrium speed where drag balances thrust?
replyAhh fair enough. Guess I wasn’t measuring the length of the observable universe in the frame of the astronaut…
replyTime experienced will be slowed down for the person in spaceship as you near lightspeed
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