Astronomy by OpenStax (Print Version, Paperback, B&W, )
This is the grayscale (black and white) paperback edition, with a donation made to OpenStax from every new copy sold. Its list price is lower from the use of the latest in printing technology.

Astronomy is designed to meet the scope and sequence requirements of one- or two-semester introductory astronomy courses. The book begins with relevant scientific fundamentals and progresses through an exploration of the solar system, stars, galaxies, and cosmology.
The Astronomy textbook builds student understanding through the use of relevant analogies, clear and non-technical explanations, and rich illustrations. Mathematics is included in a flexible manner to meet the needs of individual instructors.

Formats available of this material:
(THIS ONE) B&W, PAPERBACK BOOK REDUCED PRICE Edition ISBN-13 9781640323513
Other formats of the same material:
Hardcover: ISBN-13: 9781938168284
Paperback: ISBN-13: 9781506698038
Digital: ISBN-13: 9781947172241

Students have access for free at OpenStax dot org of this material, though if the student prefers a paper edition, this edition is made at a low cost with a donation made to OpenStax from every new copy sold.