[𝔦 • ──⃝─⃝⃝⃝⃝──] 우주 다중 접속 the cosmic multi-connections.

“The puzzling properties of gravity may be due to the way our universe interacts with another brane.”

If a certain version of M-theory is correct, and our universe, with one time dimension and three spatial dimensions, is a membrane existing within an eleven-dimensional structure that can accommodate a myriad of possible universes, how might our universe relate to other universes? What extradimensional rules govern the behavior of our universe? Could we be connected in some way to other universes?

Although the possibilities seem limitless, scientifically quantified parameters of our universe—such as the disparate strengths of gravitational and electromagnetic forces—can help us narrow down the vast number of options.

An example of what this could be is the Randall-Sundrum model. Gravity is extremely weak compared to electromagnetism at subatomic scales, but it dominates at interstellar distances.

If our universe is a brane in a five-dimensional bulk, a second brane with strong gravity could interact with us via the fifth dimension.

If the bulk is highly curved in that fifth dimension, our size and space could grow tremendously compared to the other brane, although our gravity would weaken accordingly.

Even if we cannot perceive either the bulk or the other brane, our connection to them would be the cause of the cosmos we experience today.

There is at least one plausible model of how cosmic forces work that postulates that our universe is constantly interacting with a different space-time structure within an even higher-dimensional structure.

Experimental verification of any theory of connected membranes or warped dimensions of space-time will be extremely complex. One possibility is that collisions of subatomic particles at very high energy could make it possible to detect gravitons—the hypothetical carrier of the gravitational force—in our space-time for fleeting moments.

However, although collisions have been occurring at CERN's Large Hadron Collider for years, no such detections have occurred so far.