Starred Review This picture book about the mathematical concept of infinity comes from the same team that previously tackled fractals (Mysterious Patterns, 2014) and Fibonacci numbers (Growing Patterns, 2010). As with those offerings, the authors take a complex abstraction and make it accessible to young readers through non-technical descriptions, relatable examples, and full-color, original photos that effectively reinforce the text. Even though the very idea of infinity seems overwhelming and even thinking about computing with infinity seems confounding, readers are encouraged to use their brains and stretch their imaginations. Applications include thinking of the biggest, highest number ever imagined d adding one. Or taking an orange slice and cutting it in half, and then in half again and again, forever. These simple exercises serve as appealing introductions to basic calculus operations, and adult readers will find end notes providing a brief overview of infinity theory plus an accessible explanation of string theory. Additional back matter includes a glossary and further reading suggestions. Like the authors' previous titles, this current work offers solid math along with reassuring encouragement. This attractive offering will enhance STEAM collections and spark curiosity and conversation among young readers.