What was it about the radiation math that actually had you going for a bit? I've seen the Van Allen belt brought up a hundred times but the numbers people throw around are all over the place, like some say it's a death sentence and others say the Apollo crews got less than a chest x-ray. Did you find the mission reports yourself or did someone walk you through them? The flag thing I get, that photo really does look weird at first glance, but the star thing never bugged me since I figured a camera pointed at a bright surface wouldn't pick up faint stars anyway.

500 commits on a dummy project is wild in the best way, most people quit way before that. The thing that stands out to me is the "no looking at the answer first" part, cause that's really what's doing the work here. Rebuilding from scratch forces your brain to actually pull the info out instead of just watching it go by, which is way harder and why it takes so many reps to stick.