Einstein theory of relativity in six sentence?

Einstein's theory of relativity consists of two main theories: special relativity and general relativity.
Special relativity states that the laws of physics are the same for all observers, regardless of their relative velocity.
General relativity extends special relativity by including the effects of gravity, which is described as the curvature of spacetime caused by massive
objects.
General relativity successfully explains the orbit of the planets and other astronomical observations.
Both special and general relativity have been confirmed by numerous experiments and have become integral parts of modern physics.
The theory of relativity has far-reaching consequences, such as the equivalence of matter and energy (E=mc^2) and the predicted existence of black
holes.