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Global-scale brittle plastic rheology at the cometesimals merging of comet 67P/Churyumov-Gerasimenko

Naletto, Giampiero; Francheschi, M.; Penasa, Luca +12 more

Giant ripples on comet 67P/Churyumov-Gerasimenko sculpted by sunset thermal wind

Jia, Pan; Andreotti, Bruno; Claudin, Philippe

Explaining the unexpected presence of dune-like patterns at the surface of the comet 67P/Churyumov-Gerasimenko requires conceptual and quantitative advances in the understanding of surface and outgassing processes. We show here that vapor flow emitted by the comet around its perihelion spreads laterally in a surface layer, due to the strong pressu…