Gravity is not well understood. It is a property of matter.
gravity slab pull
Yes, Einstein did produce a theory of gravity, and it is more accurate than Newton's theory of gravity.
gravity.
Based on Einstein's theory of relativity, spacetime is curved around massive objects, and gravity "acting" on objects is actually just the objects following this curve in spacetime. Gravity is not a force.
The theory that Einstein developed which pertains to gravity is called general relativity.
The theory that gravity is instable
The theory of gravity is important because humans need explanations to things they do not understand. The theory breaks a possibilty down to where it becomes understandable.
Relativity is a theory of gravity, and gravity governs the motion of planets. This is your answer in a nutshell. If you want a detailed answer, then I suggest you start studying general theory.
The Church has always promoted science, I can find no evidence that they ever had a problem with the theory of gravity.
Gravity was Newton's most famous theory.
Gravity
Yes.