What Every Young Person Ought to Know About Naked-Eye Astronomy
In order to provide a starting point for an understanding of ancient astronomical texts, I shall begin by presenting, in all brevity, the basic elements of naked-eye astronomy. I shall, of course, deal principally, but not entirely, with phenomena of interest to ancient astronomers. Among these are many phenomena, such as the first or last visibility of a planet or the moon, that the modern astronomer shuns since they take place near the horizon and further depend on imperfectly understood criteria. Thus, these phenomena are not commonly discussed in the modern astronomical literature and, more seriously, we lack modern standards with which we may measure the quality of the ancient results.
KeywordsGreat Circle Celestial Body Solar Eclipse North Pole Outer Planet
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