In this episode of Know About Everything, we explore Einstein's revolutionary theories of relativity and their impact on our understanding of the universe. The episode explains how special relativity showed that time and space are not fixed but relative to motion, leading to concepts like time dilation. It then covers general relativity, which redefined gravity as the warping of space-time by massive objects, predicting phenomena such as black holes, gravitational lensing, and gravitational waves.

The episode highlights real-world confirmations of relativity, from solar eclipse observations to the role of relativity in GPS systems. It also reflects on the philosophical implications of a universe where time and space can bend and stretch, raising questions about reality itself. Finally, it touches on the ongoing quest to unify relativity with quantum mechanics, reminding us that space-time is one of science's greatest mysteries and achievements.