Musica universalis, literally the music of the universe. This music may not actually be audible, but is in fact observable in the relationship of movement and object proportions— particularly prescient when discussing celestial bodies— the sun, the moon... and perhaps also the human heart. Called “the harmony of the spheres,” science has observed changes in Saturn’s rings due to its own moons, gaps caused by a pull relative of the moon’s size. These gaps are observable from a distance, visible with the eye, yet the forces themselves can’t be seen. Music to hear without ears. A rhythm to the universe. A reminder of our own relative nature.