Dark matter is detected gravitationally.
Dark energy theoretically explains the accelerating cosmic expansion.
In Poul Anderson's World Without Stars (New York, 1966), Chapter V, p. 28, an intrinsic unity of space explains the cohesion of the universe because gravity, propagating merely at light speed, is too weak. Artificial alteration of the n-dimensional coordinates of the mass present at a location changes the location of the mass because these coordinates describe an alterable configuration of the matter-energy field. (Anderson excels at alternative rationales of FTL.)
In Alan Moore's Watchmen, a scientist is accidentally locked in a chamber where the theoretical "intrinsic field" is to be experimentally removed from an inert mass. His body is destroyed but his consciousness forms a new body from the intrinsic field and he becomes the omnipotent American superhero, Doctor Manhattan, who wins the Vietnam War and is the cornerstone of US defense strategy during the Cold War.