Thousands of stars sparkle in the sky. A bolt of light streaks across the darkness. Mysterious! Outer Space introduces some of the most fascinating facts about outer space. Spectrum® Readers are the perfect Common Core aligned tool to support the development of nonfiction reading skills crucial to a young reader's success. Each leveled reader features high-interest informational content, exciting full-color photo illustrations and Common Core aligned comprehension practice focused on the development of critical thinking skills. This multilevel series is the perfect addition to any library at school or home.