Titlebook: Early Astronomy; Hugh Thurston Book 1994 Springer-Verlag New York, Inc. 1994 astronomy.earth.planet.telescope

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,The Astronomy of Āryabhaṭa,ronomical treatises were written over the centuries, but the work of one astronomer is particularly interesting: Āryabha.a of Kusumapura, who was born in . 476. Although he was later than Ptolemy, his planetary theories, based on regular circular motion, seem to have developed out of pre-Ptolemaic G

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干涉

The Mayas [145],y. We do not know for sure what they thought of the shape of the earth, but the later Aztecs thought that the crust of the earth was the back of a huge alligator, and the Mayas may well have believed the same.

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Book 1994of modern distractions people had more time-and more mental energy-to devote to stargazing than we have. Megaliths, Chinese oracle bones, Babylonian clay tablets, and Mayan glyphs all yield evi­ dence of early peoples‘ interest in the skies. To understand early astronomy we need to be familiar with

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Arabic Astronomy,Saracenic” to describe this culture, but historians of science seem to prefer “Arabic.” Arabic astronomy is a substantial and specialized subject; here I can deal only with some of the more interesting highlights.

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The European Renaissance,planet. But this is misleading, if not actually false: Copernicus did not place the sun . the center but . the center of the various orbits, and the earth does not move quite like the other planets (it does not have an epicycle (see page 208)).

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0172-6234 invention of modern distractions people had more time-and more mental energy-to devote to stargazing than we have. Megaliths, Chinese oracle bones, Babylonian clay tablets, and Mayan glyphs all yield evi­ dence of early peoples‘ interest in the skies. To understand early astronomy we need to be fami

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