Is there any evidence that wormholes exist? (Answered on Quora)

The concept of “Wormholes” came about this way:

Einstein published his description of Space is in the form of “Field Equations,” in 1915. They are given below.

The equations involve tensors, so the above line is actually a way of representing a number of partial differential equations. A solution of these equations will give a mathematical model of space-time. Over the years, many people have worked on these equations.

Any solution of the Field Equation will start with some assumptions. One of these solutions is the Schwarzchild metric, published in January 1916 (Just over a month after Einstein published his equations). The metric describes the gravitational field outside a spherical mass, with the assumptions that the angular momentum and electric charge of the mass are zero.

One of the implications of the Schwarzchild metric is the existence of black holes. This is because at r=0, the curvature of space time becomes infinite, and the nature of the gravitational field can no longer be predicted. A black hole is a region of space into which matter and radiation are pulled in, but cannot escape.

When Ludwig Flamm looked at the Schwarzchild Metric, he realized that another solution existed. This was a “whitehole” - a region in space where matter and radiation can escape, but can never be pulled in. He suggested that a black hole and white hole could be connected by a conduit in space.

This was further supported by Albert Einstein and Nathan Rosen in a paper published in 1935.

So, that’s where the Sci-Fi staple of wormholes came from, and no, none of them have been observed. But in 2017, there is evidence of a black hole. This implies that the theoretical background is solid, and that it is very possible that wormholes exist.

On the down side, however, all theoretical formulations show that a wormhole would be very unstable.