From hunting water on Mars to living in space, from counting the age of stars to engineering planetary rovers, astronomy brings the universe closer to us than ever. Reach for the stars with SMILE activities from NASA, McDonald Observatory and more. These activities are organized according to the astronomy topics in SMILE. The essential principles were based on several sources, including the National Science Education Standards and the AAAS Benchmarks. The descriptions of the topics come from the AAAS Benchmarks.