These are Laplace's Nebular Hypothesis, Chamberlin and Moulton's Planetesimal Hypothesis, and See's Capture Theory. Darwin's notion of Tidal Friction is hardly a different hypothesis, but it is stated individually because it applies to all of the others.
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These are Laplace's Nebular Hypothesis, Chamberlin and Moulton's Planetesimal Hypothesis, and See's Capture Theory. Darwin's notion of Tidal Friction is hardly a different hypothesis, but it is stated individually because it applies to all of the others.