Commander Bob and Captain Desson will be flying aboard Mun III, which is a re-attempt of the Mun I mission that ended in a failed ascent back in December of 2014. Their mission will be the first kerbals to orbit Mun and return, while doing so they will service 4 satellites currently in orbit around Mun. See how it will be done during this 3-day mission that will be the longest and furthest ever flown by the kerbals in space.