Why Does the Universe Spin? | 10^80 Atoms | 2 Trillion Galaxies

Using "why everything in the universe is rotating" as its entry point, this video traces the key thread of astrophysics from microscopic electrons to macroscopic galaxies. The principle of conservation of angular momentum runs throughout the cosmic scale, explaining why fundamental particles possess spin, why planets orbit stars, and even why galaxies themselves rotate. Behind the grand narrative of 10^80 atoms lies a set of concise and elegant physical laws. The core appeal lies in unifying quantum mechanics and cosmology under a single perspective, revealing the deep reasons why rotation is a fundamental property of the universe. It is well-suited for audiences interested in astrophysics and learners seeking to build a cross-scale understanding of science. Viewing suggestion: pausing and replaying enhances the experience; some content involves specialized concepts, so it may help to first grasp the overall framework on an initial viewing before diving into the details.