Die Astrophysiker Wolfgang Baumjohann, Günter Kargl und Mark Bentley vom Grazer Institut für Weltraumforschung der Österreichischen Akademie der Wissenschaften sprechen über wiederkehrende Himmelskörper.

Episoden-Foto: Rosetta’s OSIRIS narrow-angle camera captured this image of Comet 67P/Churyumov-Gerasimenko at 01:20 GMT from an altitude of about 16 km above the surface during the spacecraft’s final descent on 30 September. The image scale is about 30 cm/pixel and the image measures about 614 m across. – © ESA