KSP

 Racing sim gamers be like, "I gotta go buy a wrench and WD-40 to play games in my free time"

I have nothing against racing sims. In fact, I spent this summer playing a rallying sim. A game I had as a child back when I preferred racing arcade games.

Over the past few days, I've been sinking time into Kerbal Space Program. Racing sim players have their steering wheels, so to get in the mood I put on a shirt, tie and trousers for the full Gene Kranz experience. I truly enjoy every aspect of managing my own space program, at some points pulling out my calculator to do air pressure calculations for deploying my reentry parachutes.

The game had me interested in vector calculus and modelling moon orbital missions. There is a paper from the physics departments of US military academies that cover this.

Lunar surface EVA.

Re-entry.

My main trouble is with docking. I need to line up 2 different orbits to be in plane the same plane (roughly). And using multiple revolutions to get them a relative speed of 0. Its been fun trying to figure it out