Sorry if this turns out to be a colossally stupid question. I'm a newbie. But since light has a constant speed in all inertial frames wouldn't that mean where it would end up would have to be relative? A famous example of relativity for things in inertial frames of reference other than light is throwing a ball out of a car. To someone on the side of the road the ball will appear to go faster than it would from the perspective of a person in the car. Yet as the ball travels the ball lands will always be exactly the same location for any given amount of elapsed time since it is emitted. Replace the ball with a photon and now it travels at the same speed regardless of the observer. Does this mean that the location that the photon at any given point of elapsed time after it is emitted is relative? If not, if the photon post-emission is still in the same exact place relative to either observer what accounts for this?