Cosmogony and Stellar Evolution1


I.—The Evolution of Gaseous Masses. THE progress of observational astronomy has made it abundantly clear that astronomical formations fall into well-defined classes; they are almost “manufactured articles” in the sense in which Clerk Maxwell applied the phrase to atoms. Just as atoms of hydrogen or calcium are believed to be of similar structure no matter where they are found, so star-clusters, spiral nebulae, binary stars are seen to be similar, although in a less degree, no matter in what part of the sky they appear. The problem of cosmogony is to investigate the origins of these comparatively uniform formations and the process of transition from one class to another.

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JEANS, J. Cosmogony and Stellar Evolution1. Nature 107, 557–560 (1921).

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