Flammarion, Camille, 1842-1925, Lockyer, Winifred James, Mrs., d. 1879 · New York, C. Scribner & co. · leaf 121
ent undergone bya star in consequence of tlie movement of the Earth, weshould have the distance of this star. For let the ellipvse inFig. 23 be the curve followed by the Earth in ite annualpath round the Sun, and let S be the Sun, T S T^ a diameterof the terrestrial orbit, and T and T the position… … Fig 23. Measure of celestial distances. When the Earth is situated at the ])oint T, the angleS T E is measured, formed by the Sun, the Earth, and thestar ; when the Earth is at T^ the angle S T E is measured.It is known that in every triangle the total of the threeangles is equal to two right…
Astronomy
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![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-325-217.webp)
