According to Copernicus, retrograde motion for Venus must occur around. Physics & Astronomy

2019-11-18 20:09:29
Physics & Astronomy

inferior conjunction, when it passes between us and the Sun
superior conjunction, when the planet is on the far side of the Sun
quadrature, when the planet is 90 degrees away from the Sun
greatest elongation, when the planet is farthest from the Sun
opposition, when the planet lies opposite the Sun in the sky

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