...Aristotle viewedthe solar system as a geometrical problem; Kepler and Newton converted thepoint of view into a dynamical one... 
George Forbes 「History of Astronomy」
...) was the slavish yielding to Plato’s dictumdemanding uniform circular motion for the planets, and the consequent evolutionof the epicycle, which was fatal to any conception of a dynamical theory...
George Forbes 「History of Astronomy」
...It is not known how the dynamical equilibrium of a star cluster ismaintained; and on account of its extreme distance no motion isperceptible among its component stars...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...Here again dynamical considerations must beinvoked for the reply...
Robert Stawell Ball 「The Story of the Heavens」
...It is not, however,possible to decide a dynamical question by merely superficial reasoningof this character...
Robert Stawell Ball 「The Story of the Heavens」
...This is, no doubt, a dynamical question of somedifficulty, but it is easy to verify experimentally that it is the case...
Robert Stawell Ball 「The Story of the Heavens」
...Since Kepler’s day we have had a dynamical astronomy...
George Forbes 「History of Astronomy」
...We havealready mentioned that the first epoch was one of unstability—it couldnot last; but this second state is one of dynamical stability...
Robert Stawell Ball 「The Story of the Heavens」
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