The Universe

Multi-Dimension Theories

According to membrane theory, where is the universe located?

Hypothetically, it is possible to think of two five-dimensional membranes that contact one another in one or more dimensions. The multi-dimensional intersection of those ’branes could be, for example, a point, a line, a surface, or even a four-dimensional spacetime. One idea, then, is that our universe, which is a four-dimensional spacetime, exists because two membranes intersected, launching the expansion of space and the beginning of time. That moment of intersection would thus be the Big Bang, and the universe would then be at the intersection of two ’branes.


This is a web preview of the "The Handy Astronomy Answer Book" app. Many features only work on your mobile device. If you like what you see, we hope you will consider buying. Get the App