"Unified Field Theory"

Space-Time   

Microscopic structure of space-time

What are the building blocks of our universe that everything is made of? In this video, ASTRID EICHHORN explains how her work seeks to reveal the fundamental microscopic structure of space-time.

Fabric of the Cosmos: What is Space? NOVA HD
​What Is Space - You can't see it, touch it, or taste it, but space is everywhere. And it's not just an empty void. Surprising clues that space is "something" rather than "nothing" are overturning much of what we thought we knew about the universe, and may even hold the key to its ultimate fate.
https://www.pbs.org/wgbh/nova/video/the-fabric-of-the-cosmos-universe-or-multiverse/
https://www.pbs.org/wgbh/nova/videos/episodes/?topic=physics&sorting=newer