what is the study of time and space
The concepts of space and time are a necessary component of the overall picture of the world and therefore fall within the purview of philosophy. The study of space and time is advancing and developing as natural science—especially physics —develops.
Four-dimensional space, the concept of a fourth spatial dimension. Spacetime, the unification of time and space as a four-dimensional continuum. Minkowski space, the mathematical setting for special relativity.