Astronomy 2007 Lecture 9-6-07

Astronomy 2007 Lecture 9-6-07 - Astronomy Lecture 9-6-07...

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Astronomy Lecture 9-6-07 The Koreshan Geodetic Survey of 1897 hypothesized that light bends. Galileo observed the faces of Venus, which led him to conclude that the universe was heliocentric By recording the sun-earth distance during the course of a year, scientists revealed the elliptical orbit of the earth. During July (aphelion), the sun appeared larger, while in January (periphelion), the sun appeared smaller. Descartes (1596-1650) o Proposed sun and planets origin. o Circular eddies formed a whirlpool o Matter accumulated at the vortex center and secondary vortex formed sun and planets o Based theories on physical evidence Newtonian Physics o Could answer both what and why o Galileo introduced the basics of the Newtonian system Determined that Aristotle was incorrect about the speed of falling objects related to their weights Newton (1642-1727) o Three laws of motion and the law of gravity 1. An object at rest tends to remain at rest and an object in motion
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Astronomy 2007 Lecture 9-6-07 - Astronomy Lecture 9-6-07...

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