# If I was travelling at the speed of light, how would I know when to stop? [closed]

Ben is stood on Earth and I am in orbit in a ship capable of light speed, Ben and I agree that at a certain point in time, I will start orbiting earth at the speed of light (I know this is impossible, this is a thought experiment). We agree that after 10 years has passed for Ben, I will stop travelling and say hello to Ben. In this scenario, Ben has aged 10 years while, as far as I am concerned, no time has passed at all. My question is, if time does not exist for me while travelling at the speed of light, how would I know to stop after 10 years has passed for Ben? Or 100 years or a million years, how would I know when to stop!?

## closed as off-topic by John Rennie, garyp, Qmechanic♦Nov 10 '17 at 12:56

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• You cannot ignore the laws of physics then expect the laws of physics to give you a sensible answer. Your question assumes an impossible situation, i.e. you moving at $c$ relative to your friend, then expects a sensible answer. – John Rennie Nov 10 '17 at 11:58
• I'm voting to close this question as off-topic because the premise of the question is outside of the current understanding of physics – garyp Nov 10 '17 at 12:09