Cometary nuclei are called solid masses with sizes from several hundred meters to several tens of kilometers, which consist of ice and rocks with an admixture of stony substances. The most likely components of the nuclei, in all likelihood, are a mixture of frozen water with particles of carbon dioxide and carbon monoxide, as well as a small amount of other gases. The dust contains a large amount of stony matter. According to modern concepts, comet nuclei consist of primary matter that formed the Solar system. With the help of periodic comets that return to the Sun at certain intervals, a crust of dust should form on the surface of their nuclei, which has been “pulled out” from the ice sheet. This effect is similar in its consequences to the formation of mud on spring snowdrifts.
Comet nuclei
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