In November 1915, Albert Einstein presented his field equations of General Relativity to the Prussian Academy of Sciences. This theory radically redefined our understanding of gravity, space, and time. Einstein proposed that gravity is not a mysterious force acting at a distance, but rather the result of mass and energy curving the 'fabric' of space-time. This predicted that light would bend around massive objects, a phenomenon confirmed during a solar eclipse in 1919 by Sir Arthur Eddington. General Relativity provided the mathematical foundation for modern cosmology, explaining the orbit of planets, the existence of black holes, and the expansion of the universe. It is also practically essential for modern technology; without the relativistic corrections provided by Einstein's equations, Global Positioning Systems (GPS) would lose their accuracy within minutes.