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Comet nuclei: Morphology and implied processes of surface modification
Keller, H. U.; Basilevsky, A. T.
Surface morphology and related issues for nuclei of three comets: Halley, Borrelly and Wild 2, are considered in the paper. Joint consideration of publications and results of our analysis of the comets' images led to conclusions, partly new, partly repeating conclusions published by other researchers. It was found that typical for all three nuclei…
Early Inner Solar System Impactors: Physical Properties of Comet Nuclei and Dust Particles Revisited
Lasue, J.; Levasseur-Regourd, A. C.; Desvoivres, E.
During the epoch of early bombardment, terrestrial planets have been heavily impacted by cometary nuclei and cometary dust particles progressively injected in the interplanetary medium. Stardust and Deep Impact missions confirm that the nuclei are porous, loosely consolidated objects, with densities below 1,000 kg m-3, and that they oft…