If an object travels at a relative speed, which is a non-negligible fraction of the speed of light, with respect ... his Ph.D. from the Department of Chemistry of ETH Zurich in 2010.

But in Earth-bound reality, traveling at the speed of light (299,792,458 meters per second, or 670,616,629 miles per hour, in a vacuum) in a clunky rocket is a physical impossibility.

On its surface, entanglement allows particles to communicate over vast distances instantly, apparently violating the speed of light. But while ...