The Rosetta mission (comprising the Rosetta orbiter and the Philae lander) carried out observations of comet 67-P/Churyumov-Gerasimenko from early 2014 to September 30 2016. The aim of the mission was to fully characterize the comet by remote sensing, to examine its environment in situ and its evolution in the inner solar system. These observations, combined with modeling and ground and near Earth based observations address fundamental problems such as the processes through which comets are formed and subsequently evolve, the dynamical environment of the early Solar System, clues as to the composition of the molecular cloud from which our Solar System was born, the composition of water and organic materials, and their potential contribution to the early evolution and emergence of life of Earth, etc. This session invites papers on the most up to date science from the mission, covering what we now know, and perhaps what we haven’t been able to address yet, or perhaps will not be able to based on Rosetta data.