This video pretty much sums it up. There’s energy in empty space. Zero point and other types of energy exist too.
It’s all based on Quantum Physics. Some strange and wonderful things have come out of that field of study. It has pretty much exposed the innards of the universe.
And the video talks about vacuum energy, the Casimir effect etc. Really fascinating stuff. And it has the added benefit of being one more piece of evidence for the fact that no gods have ever existed.