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s&s Chapter 7
The Wandering Stars
| Question | Answer |
|---|---|
| Fixed stars | Stars that form constellations |
| Wandering stars | Stars that change their positions in sky against background constellations |
| Saturn | Originally called Phanion, The Shining Star |
| Jupiter | Originally called Phaethon, The Bright Star |
| Mars | Originally called Pyrois, The Fiery Star |
| Venus | Originally called Phosphoros, The Light Bearer, and Hesperos, The Evening Star |
| Mercury | Originally called Stilbon, "The Gleaming Star" |
| Superior planets | Worlds that lie beyond the orbit of Earth. Saturn, Jupiter, and Mars |
| Inferior planets | Planets inside Earth's orbit, between Earth and Sun. Venus and Mercury |
| Conjunction | From Latin word conjunctus, which means "joined together" |
| Superior conjunction | When inferior planets are on far side of Sun with respect to Earth |
| Maximum elongation | When inferior planet "rounds bend" in its orbit, it reaches point of greatest separation from Sun |
| Station | When inferior planet's motion through zodiac appears to stop |
| Inferior conjunction | When inferior planets line up with Sun |
| Apparition | When a superior planet reappears in morning |
| Quadrature | When a planet is 1/4 of zodiac circle away from sun |
| Elongation | From Latin word "elongare" which means to be far from. Eastern/western elongation is when planet is seen east/west from Sun |
| Opposition | When planet is opposite from Sun |
| Retrogradation | When planet appears to slow down and becomes stationary, and then reverses it's motion through sky |
| Lunar conjunction | When moon crosses over planet or star |
| Planetary conjunction | When planets appear to clump together |
| Occultation | From Latin word "occultare", which means to hide |