In the Newtonian regime its force is given by a universal constant times the product of the masses divided by the distance squared, and it is described on large scales by the general theory of relativity.
Mordecai Milgrom has proposed a version of this interaction called MOND. The field theory of this interaction is non-renormalizable, which has led to such attempts to model this interaction as Roger Penrose's twistor theory. This interaction is thought to be mediated by a spin-2 massless boson, and experiments such as LISA intend to search for waves produced by this interaction, which deflects light in a process known as its namesake lensing effect. In the Newtonian regime its force is given by a universal constant times the product of the masses divided by the distance squared, and it is described on large scales by the general theory of relativity. For 10 points, identfiy this fundamental interaction arising from the attraction between massive objects.
Mordecai Milgrom has proposed a version of this interaction called MOND.
{gravity} [or {gravitation}; accept obvious word forms]