The Exposition consisted of five books: the first was on the apparent motions of the celestial bodies, the motion of the sea, and also atmospheric refraction; the second was on the actual motion of the celestial bodies; the third was on force and momentum; the fourth was on the theory of universal gravitation and included an account of the motion of the sea and the shape of the Earth; the final book gave an historical account of astronomy and included his famous nebular hypothesis.
Ang pagpapaliwanag consisted ng limang mga libro: ang unang ay sa maliwanag motions ng katawan ang makalangit, ang kilos ng dagat, at din atmospheric repraksyon; ang pangalawang ay sa aktwal na paggalaw ng katawan ang makalangit; ang third ay sa lakas at momentum; ang ikaapat ay sa teorya ng mga pandaigdig na grabitasyon at kasama ng isang account ng galaw ng dagat at ang hugis ng Earth; ang huling libro na ibinigay ng isang makasaysayang account ng astronomy, at kasama ang kanyang bantog na ipotesis nebular.