This video explores the fascinating concept of space-time expansion as a consequence of general relativity. It delves into how Georges Lemaître's mathematical insights in 1927, coupled with Edwin Hubble's observations, reshaped our understanding of the universe. The video also challenges the common perception of gravity and highlights the complexities of gravitational effects on both cosmic and local scales. Join us on a journey through the intriguing world of modern cosmology and gravitational theory.