Albert Einstein shook the foundations of +Physics with the introduction of his Special Theory of Relativity in 1905, and his General Theory of Relativity in 1915. The fun part is if you add gravity to “Special Theory of Relativity” you get “General Theory of Relativity”. The former states that “Space” and “Time” are intertwined and the latter explains that “Gravity” is a curvature in Space-Time caused by matter.