TLPs (transient lunar phenomena)

Last night's astronomy club meeting was unexpectedly fascinating . . . the lecture was about the crater Aristarchus, of all things! From 30 March to 10 April I did five drawings of that particular crater. What are the odds? There are 30,000 craters on the moon. (To be realistic, only about a dozen as prominent as Aristarchus.)

I had my little hemp notebook with me, in which I had done two of the drawings, and afterward took it up and showed the lecturer. He was also impressed by the coi...