Spring 2010 Astronomy 110 MWF 9:30 &mdash 10:20

2. REVOLUTION OF THE SPHERES

This ''revolution'' is a revolution of ideas. Copernicus started it by describing the Earth as one of many planets, but he treated celestial motion different from motion on Earth. Newton completed the revolution by showing that the same laws of motion work everywhere. In between them, Kepler found the first precise laws of planetary motion, and Galileo studied motion on Earth as well as celestial phenomena.


Reading

2.3 The Moon, Our Constant Companion
• Why do we see phases of the Moon?
• What causes eclipses?
2.4 The Ancient Mystery of the Planets
• What was once so mysterious about the movement of planets in our sky?
• Why did the ancient Greeks reject the real explanation for planetary motion?
3.1 The Ancient Roots of Science
• In what ways do all humans use scientific thinking?
3.2 Ancient Greek Science
• Why does modern science trace its roots to the Greeks?
• How did the Greeks explanain planetary motion?
• How did Islamic scientists preserve and extend Greek science?
3.3 The Copernican Revolution
• How did Copernicus, Tycho, and Kepler challenge the Earth-centered model?
• What are Kepler's three laws of planetary motion?
• How did Galileo solidfy the Copernican revolution?
3.4 The Nature of Science
• How can we distinguish science from nonscience?
• What is a scientific theory?

Online

  1. Complete the Revolution of the Spheres assignment, due on Wednesday, 27 Jan 2010 at 9:00 am.

  2. Review the lecture slides.

Joshua E. Barnes      (barnes at ifa.hawaii.edu)
Updated: 23 January 2010
http://www.ifa.hawaii.edu/~barnes/ast110_10/worlds.html
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