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Title
Some Comets Split in Two, Then Reunite.
Abstract
The article present a study which revealed the phenomena with some periodic comets to split and reunite. Topics include the reconstruction of the past life of comet 67P, periodic comet outgassing from the conversion of frozen carbon dioxide and ammonia compounds into gases, and the comet nucleus configuration of reunited head and body as explained by University of Colorado at Boulder Distinguished Professor Daniel Scheeres.