Instead of Alcuiberre's proposal where the expansion of space-time takes place behind the ship, and the contraction of space-time takes place in the direction of travel, both expansion and contraction take place on all sides of the soliton in Lentz's theory. Lentz describes how Warp Drives would be possible by what is called a "soliton" that travels as a wave function in space-time. Thus another geometric solution of Einstein's field equations. In an article that’s garnered much attention, Erik Lentz shows how positive,i.e., ordinary, energy is enough to create a Warp Drive bubble if you take advantage of hyperbolic space-time instead of linear. Many questions remain, but the physicist Erik Lentz has found a solution to the biggest problem, the need for negative energy. Some also argue that some "normal" propellant within the bubble might still be needed. And, not to mention, that Hawking Radiation would bombard travelers in such a Warp Drive bubble. Other problems with Warp Drives are how to stop traveling faster than the speed of light - and return to "flat" space-time upon reaching your destination. The only problem is that no one knows how to produce such large negative energy or if it exists. This energy would encapsulate a bubble containing the travelers. He concluded that it is physically possible, given a very large quantity of negative energy. In the ‘90s, an article was published by physicist Alcubierre, which theorized about how Warp Drives could work. Read more: □ The future of space travel: through wormholes or with Warp Drives? () ![]() Some form of Warp Drives is a necessity to, for example, colonize other Earth-like planets within a generation. The passenger in such a ship would be in "free fall" and not experience any acceleration. That’s what’s referred to as a Warp Drive. ![]() But if we had a spaceship that could bend time and space, we could potentially travel faster than the speed of light. For the time being, that remains an indisputable fact. To bend time and space, large amounts of energy are needed.
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