http://dl.dropboxusercontent.com/u/42561/Screenshots/i60w-q0t2ybn.png
I've learned more about orbital mechanics in six hours with this game than in my entire physics undergrad, haha. Lost an astronaut during an EVA last night, and didn't know how to use his little RCS jetpack, so he orbited the earth independently. Sent a rescue mission to pick him up, but it ran out of fuel. Sent another rescue mission, finally picked up the guy, but didn't have enough fuel to deorbit so now I've got seven astronauts in orbit. And no parachutes.
https://pbs.twimg.com/media/BQeyq5dCUAAlP1f.jpg:large
Decided to dock with one of them to form a small space station. Here's my three-stage launch vehicle almost snapping in half due to an uncontrolled SAS control-plane feedback loop: