But also, since our planets are not very compact -- they're very spread out -- they didn't have to adjust their orbits to each other, so they're kind of just all playing their own random note at random times.
Pero, como nuestros planetas  no son tan compactos, están muy extendidos, no tienen que ajustar  sus órbitas entre sí, así que todos están tocando su propia nota aleatoria en momentos aleatorios.