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A comment on How far could a spaceship go if we never ran out of thrust? (2020). Parent comment

Re:How far could a spaceship go if we never ran out of thrus... by gambiting on Tuesday August 10, 2021 @04:32AM (#28126419)
As far as I understand - you'll come back to where you started.
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Re:How far could a spaceship go if we never ran out of thrus... by simonh on Tuesday August 10, 2021 @04:46AM (#28126511)
I'm afraid not, the accelerating expansion of the universe will stretch out space ahead of you faster than you can traverse it. From your perspective the galaxies will become sparser and sparser over time until you're in an ever colder eternal black void.
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Re:How far could a spaceship go if we never ran out of thrus... by daxfohl on Tuesday August 10, 2021 @05:10PM (#28134605)
So you witness the heat death of the universe at ~50 years. Yet you and your spaceship are still intact then, and at times exponentially beyond it. Weird.

Though perhaps the amount of energy it would take to accelerate that much exceeds the available energy in the universe? So maybe that's what balances it.

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