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 book introduces the advanced secondary or beginning university student to the process that revealed the rich tapestry of the universe to humanity, presenting astronomy not only as a field of knowledge, but also as a human endeavor in science.
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 F. Chambers - Oxford At The Clarendon Press
The work covers: the planets of our solar system; eclipses; gravity and tides; phenomena including aberration and refraction; comets; chronological astronomy; stars; astronomical instruments; the history of astronomy; and meteoric astronomy.
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.