There is a couple of things that can explain dark energy. Dark energy is theoretical because nobody gets any kind of contact with that thing. Dark matter is the gravitational effect that dominates the universe. The problem with dark energy models is that universe expands too slowly that it can't match with cosmic inflation theory. There is a question can dark energy be some kind of "U"-shaped thing, where energy returns to the point where it left? For making that thing real. There is a needed two-layer structure in the superstrings. In that model dark energy is wave movement that forms a structure that looks like an apple. It looks like the Earth and its magnetic field. The dark energy will travel from the center to the most out shell of that structure. Then it turns inside and surrounds. When the most out shell of that hypothetical energy field touches some particles. It steals their energy and then releases it as wave movement. Can dark energy be the energy that same...