Kerbal Space Adventures

Captains Jack, Donlie and Milrie Kerman today launched a lengthy and successful Mün landing, and orbital Mün probe insertion, in the name of Science.

A design flaw was responsible for the failure of the Service Module’s engine shortly after takeoff, so the crew were authorized to use the Lunar Module’s engine as a backup method of getting to Kerbin’s moon and back. The lack of second engine required both ships to return to the planet together, contrary to the mission plan, but seasoned pilot Donlie pulled it off with aplomb and no Science was harmed.