Explore spacetime diagrams in this 15-minute video from MinutePhysics' special relativity series. Delve into rotational and translational symmetry of time and space, and discover how certain transformations preserve distances measured in reference units like meters or seconds. Learn about the fundamental concepts that lay the groundwork for understanding Lorentz transformations, relativity of velocity, and Minkowski diagrams in future chapters. Gain insights into the fascinating world of special relativity through energetic and entertaining explanations, all packed into a concise format.