1837,William Whewell, “The Inductive Epoch of Newton—Discovery of the Universal Gravitation of Matter, according to the Law of the Inverse Square of the Distance”, inHistory of the Inductive Sciences, from the Earliest to the Present Times.[…], volume II, London:John W[illiam] Parker,[…]; Cambridge, Cambridgeshire: J. and J. J. Deighton,→OCLC, book VII (History of Physical Astronomy),page170:
[I]t follows from the theory of gravity, that theaphelia of Mercury, Venus, the Earth, and Mars, slightly progress.
, Oxford:Oxford University Press, December 2021;“aphelion,n.”, inLexico,Dictionary.com;Oxford University Press,2019–2022.