Okay. As you accelerate particles up to the speed of light, they require exponentially more and more energy to make a significant difference in speed. If you had a marble and you made it go the speed of light, it would be infinitely dense, it would have an infinite amount of mass and therefore, it would have an infinite amount of kinetic energy. Take ANYTHING.. As long as it has some matter. If you accelerate it to the speed of light, it will have infinite energy. It's never been done before because it's theoretically impossible. But consider this. Light waves/particles have some mass. A very tiny and miniscule amount of matter. And because they are light, they're going the speed of light. So wouldn't one photon have an infinite amount of energy? Maybe the amount of matter ub a photon is so small that the rules don't apply to them. Urgh. What are your opinions?