Publisher: Wikibooks 2009
The progress of technology has dramatically improved our understanding of the universe, revealing a richer tapestry than had ever been imagined before. This wikibook introduces the advanced secondary or beginning university student to that tapestry and the process that revealed it to humanity, presenting astronomy not only as a field of knowledge, but also as a human endeavor in science.
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by Charles J. White - J. Wiley
I present the main principles of Astronomy in a form adapted to the elementary course of instruction which is commonly given at colleges and the higher grades of academies. I selected those topics which seemed to me to be the most important.
by Forest Ray Moulton - The MacMillan Company
It has been assumed that the reader has an interest in the wonderful universe which surrounds him, and that he has arrived at such a stage of intellectual development that he demands the reasons for whatever conclusions he is asked to accept.
by George C. Comstock - D. Appleton and company
The author concentrates attention upon those parts of the subject that possess special educational value. Matter which permits of experimental treatment with simple apparatus is of peculiar value and is given a prominence in the text.
This website surveys the entire extent of the universe touching upon phenomenon from the largest to the smallest size and covering the entire cosmic interval. It presents observations as well as the theories which explains the phenomena.