The Copernican Revolution Terms

The Copernican Revolution Terms - The Copernican...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
The Copernican Revolution-Terms 1. Retrograde motion - backward, westward loop traced out by a planet with respect to the fixed stars. 2. Geocentric - theory that earth lay at the center of the universe and all other bodies revolve around it. 3. Epicycle- a construct of the geocentric model of the solar system, which was necessary to explain observed planetary motions. Each planet rides on a small epicycle whose center in turn rides on a larger circle (the deferent). 4. Deferent - A construct of the geocentric model of the solar system which was needed to explain observed planetary motions. A deferent is a large circle encircling earth, on which an epicycle moves. 5. Ptolemaic model - geocentric solar system model, developed by the second century astronomer Claudius Ptolemy. It predicted with great accuracy the positions of the then known planets. 6. Heliocentric - theory of the solar system that is centered on the sun with earth in motion about the sun. 7.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/02/2008 for the course ASTR 101 taught by Professor Caffo during the Fall '06 term at New Mexico.

Page1 / 2

The Copernican Revolution Terms - The Copernican...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online