Hello, I'm sorry to ask a question that has probably been asked many times before, but I currently have limited time, and am very anxious to find an answer. Anyways, here goes: Hypothetically: If two people start running from point A, one running at 10000 km/s, and the other running at .99c. Two seconds after they begin, a light source is shined in their direction. (Lets say that the area on which they were running was all perfectly flatland and stretched on for billions of miles.) Will the photons emitted from the light source reach them both at the same time? Or will they reach the slower runner first? I know that this is a pretty simple question, and I'm pretty sure that I know the answer, but I heard someone talking about this, and what they were saying was opposite to what I'd believed. Any help is greatly appreciated.