**Scientists have long considered wormholes as a possible means of interstellar travel within human timescales.****This video explains wormholes from the perspective of theoretical physicist Brian Greene**:

Wormholes are inherently unstable, making them an unsuitable method of traveling through space or **time**. For a wormhole to be stable, materials with negative energy density are required. Various quantum fluctuations in various fields might be able to do this, but classical matter cannot.

As Brian Greene explains, two black holes can also be connected via an Einstein Rosen Bridge or wormhole, as it’s more commonly known. Under certain conditions, space and time warp in varied ways, as predicted by General Relativity. The theory suggests that there are discrete areas of the universe where time and space are independent of one another.

Relative speeds faster than light is only impossible locally. Wormholes would allow faster-than-light travel since it would ensure the speed of light is never exceeded locally.

A wormhole permits travel at slower-than-light speeds. A wormhole that connects two points but has a shorter length than the distance between them outside the wormhole could take less time to traverse than a path through space outside the wormhole would. Even a light beam that travels through a wormhole would be faster than the traveler.

The existence of wormholes in the real world has yet to be proved, according to Brian Greene. The existence of wormholes in the real world can only be inferred through mathematics.

## Einstein-Rosen Bridge

The possibility of traveling to other parts of the universe through wormholes is not far away. It remains to be seen if wormholes are real or just science fiction. For now, the only certainty is that scientists are still hard at work finding out more about them.

**Do Einstein-Rosen bridges exist?**: Wormholes (also known as Einstein-Rosen bridges or Einstein-Rosen wormholes) are **hypothetical structures based on the Einstein field equations** and supposed to link various points in spacetime.

**What did Einstein say about wormholes?**: In the theory of Einstein and Rosen, every black hole must be paired with a white hole. There would be a tunnel or wormhole, to connect the two holes since they would be in separate places in space.

## Wormholes and time travel

Wormholes connect two points in space-time, which means that, in principle, they would allow travel in time and space. General relativity, however, dictates that it would not be possible to use a wormhole to travel to a time before the wormhole was converted into a time “machine.”

It would take us a lifetime to traverse the universe at light speed, but we might be able to do it in a single second via a wormhole, traversing unfathomable distances at once. Even though it sounds strange, it is not impossible in the distant future that people might use a wormhole to avoid major problems or even to save their lives.

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