The Ordered Universe. The Birth of Modern Astronomy (Trefil & Hazen, The Sciences , Ch 2). Homer’s “Bear that never bathes”. Stonehenge. …one of several old “time-reckoning” machines. It’s moving parts are in the sky. Ancient astronomy. Great Pyramid of Giza.
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The Birth of Modern Astronomy
(Trefil & Hazen, The Sciences, Ch 2)
…one of several old “time-reckoning” machines. It’s moving parts are in the sky.
…was aligned to the pole star, and it was possible to read the seasons from the position of the pyramid’s shadow.
…inscribed stone monuments with formulae for predicting solar eclipses
…Columbus influenced native people to provide food for his crew by warning of “an inflamed and angry moon.”
Birth of Modern Astronomy
The “Fab. Four”
Copernicus, Brahe, Kepler, Galileo
The Ptolemaic (a) and Copernican (b) systems both assumed that all orbits are circular. The fundamental difference is that Copernicus placed the Sun at the center.
On the Revolutions of the Spheres