Peter Anstey writes…
The Cartesian vortex theory of planetary motions came under serious suspicion in England in the early 1680s. To be sure, many still spoke of ‘our vortex’ well into the 1680s and ’90s, such as Robert Boyle in his Notion of Nature of 1686 (Works, eds. Hunter and Davis, London, 1999–2000, 10, p. 508), but by the early 1690s the new Newtonian cosmology was coming to be widely accepted and many in England thought that the vortex theory had been disproved. By that time the vortex theory of planetary motions had come to be seen as the archetypal form of speculative natural philosophy. What was required then was a new descriptor for that cosmological structure in which the earth is located. And a new term was soon deployed, namely, ‘solar system’.
Some have claimed that it was John Locke who coined the term ‘solar system’. In fact, the OED lists Locke’s Elements of Natural Philosophy, which it dates at c.1704, as the earliest occurrence. However, the term first appears in his writings in Some Thoughts concerning Education of 1693 where speaking of Newton’s ‘admirable Book’ about ‘this our Planetary World’, he says,
his Book will deserve to be read, and give no small light and pleasure to those, who willing to understand the Motions, Properties, and Operations of the great Masses of Matter, in this our Solar System, will but carefully mind his Conclusions… (Clarendon edition, 1989, p. 249)
Interestingly, a quick word search of EEBO reveals that the term was also used by Richard Bentley in his seventh Boyle lecture of 7 November 1692, but published in 1693 in a volume that Locke owned (Folly & Unreasonableness of Atheism, London). Bentley uses the term in an argument for the existence of God on the basis of the claim that the fixed stars all have the power of gravity. It is God who prevents the whole system from collapsing into a common centre:
here’s an innumerable multitude of Fixt Starrs or Suns; all of which are demonstrated (and supposed also by our Adversaries) to have Mutual Attraction: or if they have not; even Not to have it is an equal Proof of a Divine Being, that hath so arbitrarily indued Matter with a Power of Gravity not essential to it, and hath confined its action to the Matter of its own Solar System: I say, all the Fixt Starrs have a principle of mutual Gravitation; and yet they are neither revolved about a common Center, nor have any Transverse Impulse nor any thing else to restrain them from approaching toward each other, as their Gravitating Powers incite them. Now what Natural Cause can overcome Nature it self? What is it that holds and keeps them in fixed Stations and Intervals against an incessant and inherent Tendency to desert them? (p. 37, underlining added)
There is no evidence, however, that Bentley was using the term as an alternative to ‘our vortex’. In a letter to Newton of 18 February 1693 he speaks unabashedly of matter that ‘is found in our Suns Vortex’.
Who published the word first? Bentley’s seventh Boyle lecture was not published separately, but appeared in the 1693 volume, the last lecture of which was not given its imprimatur until 30 May that year. Locke’s book was advertised in the London Gazette #2886 for 6–10 July. I have not been able to establish exactly when Bentley’s volume appeared, but it’s not mentioned in the London Gazette before #2886.
Whatever the case, it is most likely that the term was already ‘in the air’ and history shows that it was soon widely used and, of course, it is a commonplace today.
(N.B. This post also appears on the Early Modern Experimental Philosophy blog.)