Harvard physicists say that wormhole travel may be possible. Wormholes are when space folds and thus gives you something like a portal. This can take you very far places in a short amount of time. One theory is that wormholes are black holes and on the other side is a white hole. The Einstein Rosen Bridge theory states that as you compress an object in space, it makes space-time change. It would get curved and eventually collapse on itself creating a black hole and maybe a wormhole.