Some physicists think our reality is a kind of cosmic hologram, with space, time, and gravity as manifestations of a ...

Much like a 3D hologram emerges from the information encoded on a 2D surface, our universe’s 4D space­­time could be a holographic projection of a lower-dimensional reality.

As theoretical physics delves deeper into the fundamental nature of reality, we’re left to grapple with the questions it leaves us. For example, some physicists claim that our universe is merely ...

One of the weirdest theories in cosmology is the holographic principle, the idea that our universe is a three-dimensional image projected off a two-dimensional surface — the idea that, yes, we are ...

The duality gives rise to an entire toy universe. Certain collections of ripples on the 2D boundary might represent a 3D star in the bulk, for instance, and others a bulk planet. The bulk universe ...

Plus, even if we did, the universe described by the correspondence looks nothing like the one we live in. Our universe has three spatial dimensions, not five, and it has a temporal dimension.