SPACE IS BUBBLING WITH ENERGY. “Despite rejection by the scientific community, harnessing zero-point energy remains an interest of research by non-scientific entities, particularly in the US where it has attracted the attention of major aerospace/defence contractors and the U.S. Department of Defense as well as in China, Germany, Russia and Brazil.” (Teslas’s dream of free energy from the ether).
https://en.m.wikipedia.org/wiki/Zero-point_energy