lecture01spring2009

lecture01spring2009 - Astronomy100Dr.Rhodes Lecture...

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Astronomy 100 - Dr. Rhodes Lecture # 1 1/12/2009
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QuickTimeª and a Sorenson Video decompressor are needed to see this picture. Animation to demonstrate vastly different length scales in the Universe
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Early Astronomy Stone age cave paintings dating from ~ 10,000 B.C. show astronomical objects, such as the Sun and the Moon. Knowledge of the seasons was needed to allow for the cultivation of crops from about 15,000 B. C. to about 10,000 B.C. Stonehenge was created in the Bronze Age from about 2500 B.C. to about 1700 B.C. Stonehenge was likely created to serve as an early calendar by allowing its creators to note the dates of the solstices and the equinoxes.
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Babylonian Astronomy Their astronomers also served as their priests. They created 1st star catalogues around 1600 B.C. They developed a lunar calendar which contained only 354 days per year around 1000 B.C. They created clay tablets of planetary positions around 800 B.C. which were called ephemerides .
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