Imagine this race. A beam of light is emitted from a planet (point A). Of course this beam will travel in the speed of light relative to the planet until it reaches point B. Starting at the same time as the beam, a space ship travel from point A to point B (its speed is arbitrary). The speed of this light relative to the space ship cannot be c? Otherwise the light would come to point B at different times? Doesn't this interfere with Special Relativity claiming that light has a constant speed (c) relative to all observers? Where do I make the wrong assumptions?