Binary Clock from James Davenport (or see it on Visually)
Each "hand" represents a binary pair, and each concentric ring groups the binaries by their orbital period. In the center are hundreds of binary systems with orbits shorter than a day (the shortest is just 6 hours!) At the speed of the video, these orbits are a blur. The outer-most hand tracks a binary star system with an orbital period of about 120 days. This is considered quite a long period binary, even though it's 3 times shorter than an Earth year!