How does the theory of relativity explain gravity?

It was in the year 1915 when Einstein first released this theory. He has said that there are massive objects in space which can cause some distortion and this is referred to as gravity. The attraction of two objects towards each other can be considered as gravity.

Take note that even if the center of the earth is trying to pull you towards the earth, your body is also trying to repel it a bit which explains why you can still move even when you are on the ground and not just firmly lodged in one place. The more massive an item is, the harder it will be to pull and push without additional force.

This is a matter of taking Newtonian theory a few levels deeper. Newton's theory of gravity holds well enough for small objects on a flat surface, but Einstein's theory of relativity was very different and included what, in effect, is a fourth dimension. His theory stretches to explain the movements of large objects, such as planets, and therefore includes space and time within his theory and explanations.

Einstein describes gravity as the bending of space-time geometry. He defined a set of field equations showing how gravity behaved in response to matter in space-time. Einstein didn't believe gravity was a force, more a distortion in the shape of space-time. Newton hadn't gone beyond objects on the Earth.