Question

what is the theory of relativity and explain​

Answer 1

Answer:

Albert Einstein’s theory of relativity is famous for predicting some really weird but true phenomena, like astronauts aging slower than people on Earth and solid objects changing their shapes at high speeds.

Basically it is a scientific explanation about how space relates to time. The theory of relativity sounds very weird and strange when you first hear it. But it's very important for scientists studying outer space and how the universe works.