Why can objects exceed the speed of light in a vacuum?
You cannot exceed the speed of light in vacuum because the speed of light is a constant. No matter how fast you run to catch up with a light ray, you still observe it to recede from you at c. In other words, running towards a receding light ray makes no headway in catching up to it. Since you cannot catch up to it, no observer can possibly see your speed as being greater. There simply *aren’t any such speeds to get to.* Relativistic mass increase does not exist. Bodies do not gain mass as they approach c. This concept is a holdover from pre-Relativistic aether theories that is deceptive in special relativity and does not work at all in the general theory. The reason light speed travel is impossible is kinematic, not dynamic. Relativistic velocity addition is a conclusion that can be drawn from a combination of the special relativistic effects of time dilation, length contraction, and simultaneity failure. In one dimension, if body A travels at speed v1 relative to body B, which travels
