Seminar on Drag Free Missions MICROSCOPE and LISA PATHFINDER: lessons learned The workshop was dedicated to the main issues of both missions Microscope and Lisa Pathfinder and allowed participants to get an idea of ​​the difficulties encountered and the lessons learned from both flights.  Each session was organized as follows : 30 min Microscope lecture, 30 min Lisa PathFinder lecture, 30 min of free exchange. Agenda Wed Sept 6th 09:00-10:30 Presentation of the missions (objectives, industrial organization, requirements) - ...