Herschel, John F. W. (John Frederick William), Sir, 1792-1871 · London : Longman, Rees Orme · leaf 196
of its orbit, norof the body of the sun itself. To come to any conclu-sions on these points, we must first consider by whatmeans we can arrive at any knowledge of the distanceof an object to which we have no access. Now, it isobvious, that its parallax alone can afford us any inform-ation on this… … centre, and S the sun, and A, B two situations of aspectator, or, which comes to the same thing, the sta-tions of two spectators, both observing the sun S at thesame instant. The spectator A will see it in the direc-tion A S a, and will refer it to a point a in the infinitelydistant sphere of the…
Astronomy
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