Time doesn't pass at all for a photon because nothing can go faster than the speed of light.
So what happens if you send a photon on an infinite journey? Is this actually possible?
Or is this another argument alongside Olber's paradox that allows us to determine that space-time is finite?
Or to put it another way.
If you somehow gained infinite energy to travel at the speed of light then you would seem to arrive instantly at your destination. But if you were on an infinite journey then how could you arrive instantly at a destination that you could never reach?
So what happens if you send a photon on an infinite journey? Is this actually possible?
Or is this another argument alongside Olber's paradox that allows us to determine that space-time is finite?
Or to put it another way.
If you somehow gained infinite energy to travel at the speed of light then you would seem to arrive instantly at your destination. But if you were on an infinite journey then how could you arrive instantly at a destination that you could never reach?