How Comets Work

Two major questions regarding comets have been up to now far from any solution. (i) How is it possible that water-ice sublimation from the nucleus surface does not lead to an insulating crust, stopping every gas and dust ejection within a few days? (ii) How is it possible that the gas flow crossing...

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Veröffentlicht in:	Astrophysical journal. Letters 2019-07, Vol.879 (1), p.L8
Hauptverfasser:	Fulle, M., Blum, J., Rotundi, A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Agglomerates Bonding strength Clusters Comet nuclei Comets comets: general comets: individual (67P/Churyumov-Gerasimenko) Conduction heating Dehydration Density gradients Diffusion Dumping Dust Dust particles Gas flow Gas pressure Gaseous diffusion Ice Perihelions space vehicles: instruments Sublimation
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