Ancient Scientists Learn About the Planets - Research Article from Science and Its Times

This encyclopedia article consists of approximately 6 pages of information about Ancient Scientists Learn About the Planets.
This section contains 1,749 words
(approx. 6 pages at 300 words per page)
Buy the Ancient Scientists Learn About the Planets Encyclopedia Article

Ancient Scientists Learn About the Planets

Overview

Today we know that the planets are nine large spherical objects that rotate around the Sun and reflect light from the Sun and that Earth is a planet. This knowledge has come from observations and theories made and refined over the centuries and is quite different from the concept of planets held by the ancients. Indeed, some of the planets we know today were not known in ancient times because they are not visible without the use of a telescope.

The so-called fixed stars hold constant positions relative to each other and all move together in a regular manner. During each night they appear to travel together eastward across the sky. Each morning at sunrise their positions have shifted slightly eastward in the sky relative to the day before so that a star's sunrise position seems to...

(read more)

This section contains 1,749 words
(approx. 6 pages at 300 words per page)
Buy the Ancient Scientists Learn About the Planets Encyclopedia Article
Copyrights
Science and Its Times
Ancient Scientists Learn About the Planets from Science and Its Times. ©2005-2006 Thomson Gale, a part of the Thomson Corporation. All rights reserved.
Follow Us on Facebook