My understanding: Relative to stationary body, the speed of light is 3*10^8[m/s] In all intertial frame of reference the speed of light remains constant: menaing, if I travel in rocketship @ 0.5*c, the light coming out of my rocketship will also travel at 3*10^8[m/s]. The law of physic remains same everywhere in universe. So, c is same for faster/ slower/ stationary bodies. But I have difficulty understanding a point, the maximum cosmic limit is c. (Do they mean it with reference to a stationary object?) Considering two accelerating bodies: If two of them are moving at 0.6*c the speed of light. The relative speed of them for each other would be 1.2*c (correct me if my assumption is wrong). If the light is beamed from one of these two directed to the other, the light would never reach the other because they would always travel faster than the speed of light? Second, the maximum relative speed could be bigger than c.??!!