Learn how the scientists, engineers, and flight team members who have congregated from around the world for the Rosetta mission in Toulouse, France, choose a final landing site on comet 67P/Churyumov–Gerasimenko from a possible five. They wade through a comprehensive collection of scientific data. They must pick a site which is scientifically beneficial for all the instruments on board Philae but not endanger the spacecraft by choosing a dangerous landscape. It will not be an easy task. They must reach a compromise somehow and there is no perfect spot on this dynamic comet.