Do wormholes exist? Scientists aren't sure, but they may know how to spot  them

About Wormhole Is Best Bet for Time Machine, Astrophysicist Says

Customized general relativity [modify] In some hypotheses where general relativity is modified, it is possible to have a wormhole that does not collapse without having to turn to exotic matter. For  Found Here , this is possible with R2 gravity, a type of f(R) gravity. Faster-than-light travel [edit] Wormhole travel as imagined by Les Bossinas for NASA, c.

Wormholes might allow effective superluminal (faster-than-light) travel by ensuring that the speed of light is not exceeded locally at any time. While taking a trip through a wormhole, subluminal (slower-than-light) speeds are utilized. If two points are linked by a wormhole whose length is shorter than the range in between them outside the wormhole, the time required to traverse it might be less than the time it would take a beam to make the journey if it took a path through the space outside the wormhole.

If traversable wormholes exist, they might allow time travel. A proposed time-travel machine using a traversable wormhole might hypothetically operate in the following method: One end of the wormhole is accelerated to some considerable fraction of the speed of light, maybe with some innovative propulsion system, and then reminded the point of origin.

Through The Wormhole: Is Time Travel Possible? - Documentary Heaven

German Physicists Say Traversable Wormholes Possible Can Be Fun For Everyone

For both these approaches, time dilation causes the end of the wormhole that has been moved to have actually aged less, or end up being "younger", than the fixed end as seen by an external observer; nevertheless, time connects in a different way through the wormhole than outside it, so that synchronized clocks at either end of the wormhole will constantly stay synchronized as seen by an observer going through the wormhole, no matter how the two ends move around.: 502 This means that an observer getting in the "more youthful" end would leave the "older" end at a time when it was the very same age as the "younger" end, effectively returning in time as seen by an observer from the outside.

According to existing theories on the nature of wormholes, building of a traversable wormhole would need the presence of a compound with negative energy, typically referred to as "exotic matter". More technically, the wormhole spacetime needs a circulation of energy that breaks different energy conditions, such as the null energy condition in addition to the weak, strong, and dominant energy conditions.