From the ESA operations center, they have confirmed that the Rosetta probe has been placed on the surface of the comet as planned. At that time, he has stopped sending signals to Earth. From now on he will continue traveling on the comet skirts next to the Philae module.
During the downstream operation, gas chromatographers, cameras and other devices have continued to operate and collect data. In this way, the researchers have obtained relevant information. Therefore, the mission is not finished, but, in addition to the previous data, it includes these new data for analysis and conclusions.
In addition, those responsible for the mission recalled that, in addition to reporting on the comet, the Rosetta mission has made a great contribution to other missions, since they have applied systems tested with it in these new missions, including the Gaia mission.
Those responsible also recognized the work of those who participated in the mission. The word most used to define what is achieved is: "historical".