No Time at all
Since HG Wells published his book Time Machine in 1885, people have been interested in time travel. Many have attempted to explain this, but most have led to failures. However, a university professor (and avid reader of everything related to black holes and science fiction) has supposedly proved that time travel is mathematically possible. According to a new study by Ben Tippett, a math and physics instructor at the University of British Columbia's Okanagan campus, math can prove the existence and possibility of time travel. "People think of time travel as something of a fiction, and we tend to think it's not possible because we don't do it. But mathematically, it is possible." Tippett's study was released in the International Journal of CLASSICAL and QUANTUM GRAVITY, and the description of his research states: "In this paper, we present geometry which has been designed to fit a layperson's description of a 'time machine.' This box allows those within it to travel backward and forward through time and space, as interpreted by an external observer. Timelike observers travel within the interior of a 'bubble' of geometry which moves along a circular, acausal trajectory through spacetime. If certain timelike observers inside the bubble maintain a persistent acceleration, their worldlines will close." Tippett stated in his study that we cannot look at a three-dimensional space but a four-dimensional space where different directions are connected. Based on Einstein's theory, he explains that spacetime is curved, which results in planets in the universe having curved orbits. Imagine standing next to a massive star to picture this in your head. At the place where you are standing, the geometry in spacetime is curved, which means everything near the star (and you) will have a curved trajectory and create a curved path around the star. From another point of view, in a flat or uncurved spacetime, planets and stars would move in straight lines rather than curved lines. In Tippett's words: "The time direction of the spacetime surface also shows curvature. There is evidence showing the closer to a black hole we get, time moves slower," says Tippett. "My model of a time machine uses the curved spacetime — to bend time into a circle for the passengers, not in a straight line. That circle takes us back in time." In this study, Tippett showcased his mathematical model, the traversable causal retrograde domain in spacetime or TARDIS. His model showcases a 'bubble' of spacetime geometry that moves eight times faster than the speed of light, allowing it to move backward in time. In other words, he wants to use the curvature of spacetime in the universe to bend time into a circle for "passengers" sitting in the time machine, which allows them to travel into the future and past. He says: "It is a box that travels 'forwards' and then 'backwards' in time along a circular path through spacetime. Delighted external observers could watch the time travellers within the box evolving backwards in time: un-breaking eggs and separating cream from their coffee." If you look at this picture, you will better understand what I am talking about. Person A is the time machine passenger, and Person B is the observer. Both persons A and B experience time in dramatically different ways. "Within the bubble, A will see B's events periodically evolve and then reverse. Outside the bubble, observer B will see two versions of A emerge from the same location: one's clock hands will turn clockwise, the other counterclockwise." Of course, if something sounds too good to be true, then it is probably not true. Although Tippett has conducted a tremendous amount of research and possibly proven the existence of time travel, he doubts that anyone will actually build a workable machine anytime soon. He says: "HG Wells popularized the term' time machine,' and he left people with the thought that an explorer would need a 'machine or special box' to accomplish time travel,".. "While it is mathematically feasible, it is not yet possible to build a spacetime machine because we need materials – which we call exotic matter – to bend spacetime in these impossible ways. Still, they have yet to be discovered,." To put it simply, Tippett developed a model of a possible time-travelling machine. Still, we do not have the necessary materials to build the device with our current technological advancements.
