Cometary Nuclei—From Giotto to Rosetta

@article{Keller2020CometaryNG,
  title={Cometary Nuclei—From Giotto to Rosetta},
  author={H. Uwe Keller and E. K{\"u}hrt},
  journal={Space Science Reviews},
  year={2020},
  volume={216},
  pages={1-26}
}
We will briefly recapitulate the beginning of modern cometary physic. Then we will assess the results of the cometary flyby missions previous to ESA’s Rosetta rendezvous with comet 67P/Churyumov–Gerasimenko. Emphasis is given to the physical properties of cometary nuclei. We will relate the results of the Rosetta mission to those of the flybys. A major conclusion is that the visited cometary nuclei seem to be alike but represent different stages of evolution. Coma composition and appearance are… 

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