This instructional and resource guide is designed so that it may be used in the secondary school or in the first two years of college to present a series of units in space science, or to supplement existing science and mathematics courses. The guide consists of six units: (1) measurement, distance, and size in astronomy, (2) atoms, spectra, and stars, (3) atomic nuclei and stars, (4) the solar system, (5) the origin and evaluation of life, and (6) motion, rockets and gravity. Each unit is divided into the following parts: (a) a list of understandings that a student should have after completing study of the unit, (b) a topical outline of the material in the unit, with expositions, tables, demonstrations, and activities inserted when appropriate, (c) a list of sample questions, (d) problems and projects for further exploration, (e) audiovisual aids, (f) an annotated teacher bibliography and (g) an annotated student bibliography. Each of the units is basically self-contained. However, in general they require additional knowledge which may be obtained by a study of the earlier units, from the context of another course, or by a study of the material listed in the bibliographies. The material in the guide covers a range of difficulty levels, from grade nine through the first two years of college. (LC)