Popular astronomy : a concise elementary treatise on the sun, planets, satellites and comets (1865)
Mitchel, O. M. (Ormsby MacKnight), 1809-1862 · New York : Oakley & Mason · leaf 150
f we recall to mindthe cause of this apparent retrogradation. When thesun, earth, and planet, are all on the same straight line,the earth and planet being on the same side of the sun,then the planet is exactly in opposition. The earth andplanet starting from this line, as the earth moves theswifter… … 0 E P is the line on which the three bodies are foundon the day of opposition. At the end of, say, twenty-four hours, the earth arrives at E in its orbit, the planetat P, and then the planet is seen from the earth in the 136 JUPITER. direction E^ P S, whereas on the day previous it wasseen in the…
Astronomy
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