All of the atoms that make up the material world (and us) are 98% empty space. That’s a fact.
The nucleons and the electrons, in all of the atoms nucleus’s, in every single particle are spinning so fast around the nucleus that we and the world appear solid, when in fact, we are not. Physics has proven this.
Everything is an apparition and we are just moving about like so many embodied thoughts in a ghost town called Earth.