It would begin to move through a higher space, yet without losing sight of the four-dimensional universe.

If the construct had really folded into a hypercube, then she was perhaps now in a four-dimensional universe.

Spacetime is the fact that we have a four-dimensional universe, having three spatial (space) dimensions and one temporal (time) dimension.

Our bodies lay sleeping, but bodies are fragile things bound to the four-dimensional universe.

The vacuum here is made of four-dimensional universes.

You mean ... they found a way to enter another four-dimensional universe?

So every four-dimensional universe interacts with an infinite number of adjacent universes.

"How do we know we live in a four-dimensional universe?"

But gravity in a four-dimensional universe would obey an inverse cube law.

The visible four-dimensional universe lies on one of these branes.