Is the Universe a Hologram? Future Telescopes Could Tell Us

The world as we perceive might not actually exist. It could just be a hologram. This statement sounds more like a thought you've had at 3 am than a scientific theory, but the existence of a holographic universe is more possible than you think. Some theoretical work shows that the universe could exist in a dimension lower than the one our minds perceive. The debate over what's called "the holographic principle" has largely remained theoretical, but new research in Physical Review Letters shows ho...