SJSque

I've been 'designing' websites since about 1994, and I remember being very excited when the major browser(s) started supporting background images, so that my webpages didn't have to have the same flat-grey background that every other webpage in the world had at the time. I also made one of the first 'starfield' backgrounds, and was simultaneously thrilled and annoyed to see other people start using it on their webpages.

For what it's worth: you still write very well.

10E6 = 10×10⁶ = 10⁷, so you can unpick that nit!

Just a comment on your second and third paragraphs: it's a bit odd that you invoke general relativity ("curved spacetime") for the Moon's basic orbit, and then discuss classical mechanics ("tidal forces are literal forces") for the second-order effects. Tidal forces are of course also gravitational effects, just differential (i.e., the result of the fact that we are not talking about point masses, but rather extended objects).

For what it's worth: Al Sweigart's "Automate the Boring Stuff with Python" is pretty nice, and it's a good one for lending out to colleagues who show interest in learning Python (especially those poor souls with tedious jobs...).