[SOLVED] Speed of Light always remains constant ? think again. Take 3 points P1, P2 and D Point D is at a fantastic distance from P1 P2. Point P1 is very near to P2 and both are at equal distance from D. A Rocket R2 is waiting at P2 Rocket R1 is approaching at tremendous velocity at point P1 and towards D. At the instance when the rocket R1 reaches P1, both the rockets simultaneously fire a powerful laser beam ( may be a few meters in length ) towards D. Few hours after firing the laser, R2 starts accelerating towards D and quickly showing its raw power, matches the speed and starts flying with R1. Now, will the speed of already fired lasers that havent yet reached D with respect to R2 decrease ? now that it has come closer to the R1 hours after firing the laser, and while both the lasers together are approaching D.