Fascinating photons make up light, from X-rays and microwaves to the colors of the rainbow. Scientists use tiny photons to study and create things big and small, like using a precise laser in an experiment or learning about the origins of the universe itself. Complex concepts are presented in a fun and readable style as physicist Dr. Eve Vavagiakis shines a light on these unique elementary particles and the many ways they appear and behave. Readers are invited to imagine harnessing the power of photons, perhaps by observing distant stars through a telescope or building a quantum computer! Energetic illustrations and catchy rhymes sparkle in this latest entry in the STEM-tastic Meet the Universe series. Back matter includes a "Know Your Photons" section that expands on concepts introduced in the text.