Orbital mechanics has never been my forte. It’s just amazing to me how astronomers from 2-300 years ago were able to work all this out in the first place. I’m impressed by the ability of the technicians today to pull this off.
Fun fact: in the one hour since I posted this, JWST has lost about 1.8 mph of radial velocity with respect to Earth.
Leibnitz/Newton
My favorite scene from Apollo 13 was when they were coming back to Earth and they needed to make a course correction prior to re-entry and all the scientists at the Space Center whipped out there slide rules and started working on the calculation.
It’s kind of amazing that for the most part we went to the Moon using slide rulers to get the math right.