Understanding Albert Einstein’s Theory of Relativity means entering a universe where space and time are not fixed backgrounds, but flexible parts of reality itself. Arguably one of the greatest contributions to physics of all time, relativity consists of two major theories: Special Relativity, which explains how space and time behave when objects move close to the speed of light, and General Relativity, which explains gravity as the curvature of spacetime. These posts explore light speed, time dilation, mass, energy, gravity, black holes, the bending of light, accelerating observers, planets, galaxies, and the shape of the cosmos. Together, Special and General Relativity form a foundation for much of modern science and remain among the most tested and successful ideas in all of physics.
