4 ms·
> If you're planning a round-trip, you'll find rather more time has transpired on what used to be Earth. Or less, depending on the rotation of the universe as
by saalweachter 3y ago
> If you're planning a round-trip, you'll find rather more time has transpired on what used to be Earth.
Or less, depending on the rotation of the universe as a whole.
- ben_w 3y agoOr no return may be possible at any speed/acceleration given the expansion of the universe.
- dredmorbius 3y agoGiven that the outbound journey is already technically challenging, that's very nearly quibbling, despite cosmological accuracy.