Is dark matter real or a theory. Erik verlindes theory of emergent gravity is proof that not all physicists believe dark matter is necessary to explain the cosmos. So the question at hand is whether dark matter and dark energy affect ordinary atoms. Im going to almost violate betteridges law of headlines here by. Dark matter is defined as hypothetical matter that is undetectable by its emitted radiation but whose presence can be inferred from gravitational effects on visible.
Dark matter is a virtual particle quantum vacuum effect. Dark matter and the nature of black holes are two of the biggest mysteries in astrophysics and now a new theory has linked the two together. A new theory of gravity might explain the curious motions of stars in galaxies. There is a very simple qualitative explanation for the absence of real dark matter particles.