... Tonight's Sky . ... OSIRIS images of Rosetta's comet show jets of activity . While in the past most of the dust emitted from Comet 67P/Churyumov-Gerasimenko seemed to originate from the neck region, images obtained by Rosetta s scientific imaging system OSIRIS now show jets of dust along almost the whole extent of the comet. ... In the first images from this summer that showed distinct jets of dust leaving the comet, these jets were limited to the neck region, said Holger Sierks from MPS. ...