ASTR 1200 Chapter Notes - Chapter 3: Orbital Period, Scientific Method, Deferent And Epicycle

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3. 1 the ancient roots of science: everyday observations provide a base for scientific thinking starting at an early age and continuing, in central africa, the sun, moon, and stars were used to tell time and determine seasons. Some cultures also used stars for navigation: the sun and it"s shadows from sticks were used as early sundials for time during the day. Constellation position was used at night: am ante meridiem, pm post meridiem, stonehenge was used to keep track of seasons, as well as a religious gathering area, many cultures had buildings to represent the cardinal directions. Others were for marking special dates based on sun position: there are only 354 or 355 days on a 12 month lunar calendar, archaeostronomy is the study of astronomical connections to ancient structures. 3. 2 ancient greek science: greeks made models, conceptual representations, to explain and predict what they observed, as early as 500 b. c. , it was being taught by pythagoras that the.

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