As the next step in conquering space, I decided to put a space station in Kerbin orbit. Of course, just sticking something in orbit is trivial, so I would be trying to dock two different space station parts together - docking being one of the hardest things to do in Kerbal Space Program, or indeed actual space.
Did I say putting things in orbit was the easy bit? The launcher I threw together seems to have a strange flaw where if it's throttled up towards the end of one of its stages, it suddenly spins out of control and explodes (the crew module is mercifully left intact and able to parachute back down to Kerbin).
Spoiler: I will actually complete the space station before realising that the issue is with some incorrectly connected fuel lines causing some of the engines to run out of fuel before others, throwing the rocket fatally off-balance.