A Dirac sea is six hundred eighty meters in diameter with a thickness of three nanometers. The ultra-thin space is supported by an inwardly-directed field. The inside is an imaginary space, called a Sea of Dirac. It is theorized to be connected to another universe.

I'm back again.

I'll let you have this link: It's PBS Space Time. In this episode, he explains the "Dirac Sea." This is mah favorite show on planet Earth, do not make any attempts on red-pilling me on it. I mean it.

Never heard of it, but looking at the wikipedia page it's pretty simple. It's an older way of thinking about vacuum and particles that is mathematically equivalent to what we do today.

Think of empty space as not empty but brimming with particles at negative (potential?) energy. A normal particle is one that has positive (potential?) energy--it's "above" the sea, and an anti-particle is a hole in the Dirac sea where one of the particles is missing. A particle and a hole annihilate each other if they meet.

It's got antimatter n' sheiitt

What's that?