The late Patrick Moore did a lot of work on what he termed transient lunar phenomena, essentially lights, or "clouds" on the moon, due to some unknown geologica

The late Patrick Moore did a lot of work on what he termed transient lunar phenomena, essentially lights, or "clouds" on the moon, due to some unknown geological process. https://en.wikipedia.org/wiki/Transient_lunar_phenomenon https://en.wikipedia.org/wiki/Transient_lunar_phenomenon