1932

Abstract

Recent results, many but not all from flybys of comets by spacecraft, particularly the results from , have dramatically improved our understanding of the physical properties of cometary nuclei. Characteristic features are modest size (<20 km), high porosity, low strength, and heterogeneity. There is also evidence that can be interpreted as showing the original cometesimals in a cometary nucleus and suggesting radial migration of macroscopic cometesimals during the aggregation of nuclei, which in turn aggregated into the cores of the giant planets.

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/content/journals/10.1146/annurev-astro-081710-102506
2011-09-22
2024-04-19
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  • Article Type: Review Article
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