According to Albert Einstein’s epic discovery, we live in four-dimensional “spacetime.” Spacetime is not static. In his enforced isolation, Lentz found a way to construct a warp bubble using only positive energy. Principle of the Alcubierre drive: Spacetime contracts at the front of the bubble (right), corresponding to a warp in spacetime. “If correct, this has the potential of opening up new interest and novel avenues of research in warp drive physics,” he says. So far, they argue, there is no known way to actually accelerate a warp bubble.