1. 462 Hermeticism – An intellectual movement beginning in the 15th c. that taught that divinity is embodied in all aspects of nature; included works on alchemy and magic as well as theology and philosophy; influenced leaders of Scientific Revolution, cont. into 17th c.
2. 463 Ptolemy – came up w/ Ptolemaic conception of universe: concentric spheres fixed around an unmoving Earth, in the order of moon, Merury, Venus, the sun, Mars, Jupiter, Saturn, and fixed stars, beyong that was Empyrean Heaven; Christian Ptolemaic universe
3. 463 Copernicus – heliocentric conception of Earth
4. - On the Revolutions of the Heavenly Spheres – Universe: 8 spheres w/ motionless sun at center & sphere of fixed stars at 8th sphere. The planets revolved around sun in order of Mercury, Venus, Earth, Mars, Jupiter, & Saturn; moon revolved around Earth
5. 465 Brahe – sun & planets revolved around earth while other planets revolved around sun
6. 465 Kepler – 3 laws of planetary motion: 1. orbits of planets were elliptical, not circular w/ sun at one focus rather than in center 2. speed of planet greater when nearer to sun, slower when further from sun 3. planet's w/ larger orbits revolve at slower avg than those w/ smaller orbits
7. 466 Galileo – discoveries: universe made of material like earth & not heavenly, mountains & craters on moon, 4 moons revolving around Jupiter, phases of Venus, sunspots, made his own telescope
8. Dialogue – defense of Copernican system
9. Starry Messenger – Galileo was believer of heliocentricism & supported Copernicus
10. 470 Newton – invented calculus (calculating rates of change), investigated composition of light, inaugurated his work on law of universal gravitation, studied alchemy, discovered gravity
1. Principia – math proofs of universal law of gravity, 3 laws of motion: every object continues in a state of rest or uniform motion in straight line unless deflected by force; rate of change of