by James N. Pierce
Number of pages: 134
Elementary Astronomy is a book written specifically for teachers (and parents) of students in grades K-6. The astronomy topics it covers are those most commonly found in these grade levels: Earth and Sun; night and day; seasons; phases of the Moon; eclipses; the solar system; planets; the night sky; constellations.
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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.
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.
The book takes the reader on a tour of Hubble's most significant science successes, combined with some of the telescope's technology and history. The book details Hubble's work in cosmology, planetary science and galactic science.
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.