I’d be very interested in references for them if you could find them. As far as I’m aware, there’s been discussion about how to look for signs of engineering. There have been a handful of things that at first looked artificial and were then explained (pulsars being the most obvious example).
I’d be very interested in references for them if you could find them. As far as I’m aware, there’s been discussion about how to look for signs of engineering. There have been a handful of things that at first looked artificial and were then explained (pulsars being the most obvious example).