I got in a conversation with my brother in law's uncle a few years back, and found out he spent a lot of time "back when" working out how to de-orbit the old Sk

I got in a conversation with my brother in law's uncle a few years back, and found out he spent a lot of time "back when" working out how to de-orbit the old Skylab station. Calculating drag based on how it was oriented (and how to orient it) to encourage de-orbiting just so. Still kind of amazing to think about how he did that. It's like trying to line up just the right bowling ball shot on a 1000' long lane. Remotely.