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> we eventually start to colonize other planets.

Could you please clarify which ones? I'm planning my escape, but it seems that even lightspeed wouldn't be enough to colonize anything suitable.

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Eh? If you go at light speed you can literally go everywhere in the universe subjectively instantly due to time dilation.

> If you go at light speed

I will certainly not. And even if I did — within any reachable radius there's nothing actually suitable, everything is 10+ ly away, but maybe I missed something.

If you were traveling very close to light speed, time dilation would mean your experience of time is slowed down, such that if you can go infinitely close to the speed of light, you can travel anywhere as quickly as you have the energy for. For an observer on Earth you'd still take however many lightyears away the location is.

If you did go at 99.999999% or whatever 10 light years away means basically no time for you. That's how time dilation works. Or, from your subjective experience, the faster you go, the shorter the distance. If you go REALLY fast, the distance shrinks to nothing. Those two perspectives are the same way to think about the same underlying time/distance transformation that happens.

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