[Steely Tom]

So if I read this correctly they are detecting repeating pulses of coherent light. I’m not sure that coherent light occurs naturally.

I don't think there are any known "natural" processes that produce coherent light, but maybe there is such a process.

The "1-4-5" chord progression doesn't occur naturally, that's for sure.

[Seruzawa]

It does when you listen to the MC5.