All of this stretching of space is described by Einstein’s theory. How space-time stretches and warps is determined by the matter and energy filling the space and how it is distributed. In the vicinity of a massive object like the earth, for instance, space-time is warped in such a way that objects moving near the earth have their trajectories affected, and they seem to be attracted to it by the “force” of gravity. In the Big Bang theory, the fact that the galaxies are flying apart from each other