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Migrating Scarps as a Significant Driver for Cometary Surface Evolution

Soderblom, J. M.; Davidsson, B.; Oklay, N. +10 more

Rosetta observations of 67P/Churyumov-Gerasimenko (67P) reveal that most changes occur in the fallback-generated smooth terrains, vast deposits of granular material blanketing the comet's northern hemisphere. These changes express themselves both morphologically and spectrally across the nucleus, yet we lack a model that describes their formation …

The Rocky-Like Behavior of Cometary Landslides on 67P/Churyumov-Gerasimenko

Bertaux, Jean-Loup; Da Deppo, Vania; Naletto, Giampiero +36 more

Landslides have been identified on several solar system bodies, and different mechanisms have been proposed to explain their runout length. We analyze images from the Rosetta mission and report the global characterization of such features on comet 67P/Churyumov-Gerasimenko's surface. By assuming the height to runout length as an approximation for …