Warped space. Artwork illustrating the concept of space being distorted by concentric gravity waves emanating from a source of extremely high mass. The enormous gravitational pull of this black hole (centre left) creates a yawning chasm, warping the fabric of space for light years around. In Einstein's General Theory of Relativity, he explained the phenomenon of gravity as a distortion of space-time. Other massive and super-dense astronomical objects such as white dwarfs and neutron stars would also produce this strong warping of space-time. This grid of space is like a thin rubber sheet on which objects of increasing mass produce larger dents.