, assuming that the speed of light is the same in both directions, which we can’t prove. https://en.wikipedia.org/wiki/One-way_speed_of_light https://en.wikipe

, assuming that the speed of light is the same in both directions, which we can’t prove. https://en.wikipedia.org/wiki/One-way_speed_of_light https://en.wikipedia.org/wiki/One-way_speed_of_light https://youtu.be/pTn6Ewhb27k https://youtu.be/pTn6Ewhb27k