What will you discover in outer space? The Our Solar System series (11 titles) lets young adventurers explore that very question. Each work uses key early reading features to introduce celestial bodies to youngsters, including quick, digestible chapters that utilize clean layouts, short sentences, repetition of words and phrasing, bolded vocabulary, and “Did You Know?” fact boxes as well as crisp, labeled photos and digital diagrams that support the main text. Mercury shares great details about the planet closest to the sun, from its small size to its surprisingly short orbit. All of the titles have a similar concluding chapter focused on the discoveries made by satellites and modern science, helping readers better understand the short timeline during which we’ve discovered new details about outer space. A supplemental activity at the end of each work is sure to foster curiosity and some fascinating discoveries among budding scientists.