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- Mar 16, 2012
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Since laser beams are to travel infinitely across the universe until the light is absorbed by matter, let's just say that I take a laser pointer, turn it on, point it at the night sky and flail it across in my wrist hitting saturn from the earth which is about 1.2 billion kilometres away (close enough for the laser beam to reach saturn as it's not lightyears away). Do you think that the laser dot or the beam moving across saturn moves faster than the speed of light? For instance another matter reachable within less than a light year, if saturn is too close for the laser to travel faster than the speed of light or maybe a machine that can move faster than my wrist might be contributing factors for making a laser pointer dot travel faster than the speed of light. The farther away the matter from earth is, the more sensitive the speed of the laser beam with the movement of your wrist is when it hits the matter. Think of it as this, you point your laser pointer at something that's 5 feet and the dot doesn't move as much. Now point it at something that's 500 metres away with the same steadiness as a target at 5 feet, the dot from the laser will move all over the place. Same concept as pointing it at planets and other matter in space. What do you guys think. I hope my explanation isn't too complicated.