Earth Sciences 1086F/G Chapter Notes - Chapter Unit 2 Introduction: Pythagoras, Applied Mathematics, Space Debris
4 Jan 2021
School
Department
Course
Professor
Document Summary
Our solar system consists of a central star (sun) surrounded by 8 major planets, 3 dwarf planets, too many comets to number, and space debris. Geocentric model: earth is at the center of the ss. Heliocentric model: sun is at the center of the ss. Pythagorus: greek philosopher (530bc, also came up with pythagorean theorem) who came up with one of the earliest models of the solar system. Pictured earth as a stationary object in space, surrounded by a sphere which contained everything else (including sun), objects inside the sphere rotated slowly east at speeds depending upon how far they were from earth. Plato 100 years later, still didn"t produce anything better than pythagorus. Aristarchus spent a lot of great library at alexandria (egypt) and came up with the idea of placing sun at the centre instead. Believed that the geometry seemed to work and he seemed able to predict events in the ss but never took it further.
