<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />
Dismiss
Skip Navigation
Our Terms of Use (click here to view) and Privacy Policy (click here to view) have changed. By continuing to use this site, you are agreeing to our new Terms of Use and Privacy Policy.

Chapter 23: The Planets

Difficulty Level: At Grade Created by: CK-12

Most stars we observe form fixed constellations in the sky, undergoing daily motion (e.g. rising and setting) but maintaining fixed positions relative to each other --- like the stars of Orion, or the Big Dipper. The ancients however noted that 5 stars constantly moved --- all following close to the paths of the Sun and Moon across the heavens, i.e., close to the ecliptic. The Greeks called them planets, Greek for wanderers, a name still used.

Chapter Outline

Chapter Summary

Image Attributions

Show Hide Details
Description
Difficulty Level:
At Grade
Authors:
Grades:
Date Created:
Feb 27, 2012
Last Modified:
Jan 08, 2016
Files can only be attached to the latest version of chapter
Please wait...
Please wait...
Image Detail
Sizes: Medium | Original
 
CK.SCI.ENG.SE.1.Physics-Stargazers-to-Starships.23