Here's my entry for the challenge: (v1.0.4) I put a satellite to scan ore on duna into kerbin orbit. (As I did the challenge in career mode I wanted to do something useful.) As you can see in the pictures I prohibited any fuel drain from the satellite. The satellite was attached with a decoupler, therefore the seperation in the flight results. To land back on KSC easier, I waited for daylight, that's why the mission needed 3.5 hours. Although I overshot the runway first, I had enough fuel left to do a u-turn and land more or less smoothly on it. Thanks for offering this cool and achievable challenge!
