I agree..fascinating for sure. I read about this just today and couldn’t imagine what it was like to be there for these folks. Though I’m not into space thingy’s I do find certain happenings/discoveries interesting.
Still find it amazing we have robots walking on Mars surface....that was fun watching and hard to imagine possible!
These calculations were made decades ago.
You can determine the height of Lunar Mountains using trigonometry and lunar occultations.
I am an idiot, but there are really smart people out there.