This animation illustrates the origin of higher mass elements in the universe. Shruti Agrawal was responsible the design. It was built using jQuery and GSAP, as well as Wheel-indicator to track user scrolling behavior.
The interactive webpage is available here. The animation can be controlled through scrolling.
Please note that it is intended for high-resolution screens with a 16:9 ratio (i.e. modern laptop/desktop). It will break on mobile.