Filled with high interest exercises, this Grade 9 Unit 7workbook focuses on extent of the universe, constellations, telescopes, space explorations. Lifepac science curriculum brings the physical world of God's creation into focus. Students conduct experiments to reinforce scientific concepts, such as astronomy. Perfect for students who flourish in a self-paced, individualized learning format, each consumable Lifepac combines lessons, exercises, projects, reviews, and tests. Paperback.