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G. D. Nickas (Hanover College)
As they orbit the sun over a great range of distance, comets represent a class of objects subject to a wide variety of environmental and thermodynamical inputs. The author has considered the effects of varying insolation on cometary bodies having a reasonable range of composition and structure in order to model observed emission and outgassing characteristics. A model incorporating biotic matter, as proposed by Hoyle et al has also been studied.