In this thread is proposed a wave mechanism for the spacing in the forming of planetary orbits. now,
steady waves have even been detected in the in the interstellar plasma:
Cornell University. "In the emptiness of space, Voyager I detects plasma 'hum'." ScienceDaily. ScienceDaily, 10 May 2021. <
www.sciencedaily.com/releases/2021/05/210510113603.htm>.
"--instruments have detected the constant drone of interstellar gas (
plasma waves), according to Cornell University-led research published in
Nature Astronomy. ----" (bold added)
just speculating, but a hum, constant frequency , can be generated by the steady movement of the instrument through standing [density] waves. ---and--