Which theory describes the relationship between space, time, and matter?

The theory that describes the relationship between space, time, and matter is relativity. This theory, developed by Albert Einstein, fundamentally changed our understanding of physics by introducing the concept that space and time are intertwined in a four-dimensional continuum known as spacetime.

In relativity, the effects of gravity are explained as the curvature of spacetime caused by the presence of mass. For example, massive objects like planets and stars create a warping effect in spacetime, which influences the motion of other objects nearby. This contrasts with previous notions such as Newtonian physics, which treated space and time as separate and absolute entities, lacking the flexibility that relativity incorporates.

Moreover, relativity, particularly in its special form, also revolutionized our understanding of simultaneity and the speed of light as a constant for all observers, regardless of their relative motion. This intricately ties in the concepts of matter through its relationships with energy, as expressed in the famous equation E=mc², which relates energy (E) to mass (m) and the speed of light (c).

While quantum mechanics deals with the behavior of particles at subatomic scales and field theory describes how forces are transmitted through fields, it is relativity that uniquely addresses the larger-scale interplay