Meet Ray. He's light! And he's been shining since time began. Wherever there's life on Earth, there's Ray, helping everything under the sun thrive. And Ray can really move--fast. Have you ever hurtled through space? Become a rainbow? Made food for plants? Ray has! With brilliant wit and sparkling one-liners, Ray introduces readers to a light show like no other. Filled with awe-inspiring artwork, funny asides, and a spotlight on kid-enticing facts, Ray invites us to bask in his warmth, as he illuminates our world.

"[A] refreshing combination of charm and solid fact [and] a high-wattage spotlight on our most important power source." --Kirkus

"[A] brilliant addition to the Science Pals series. . . . Every part of the book is packed with fascinating facts and tidbits. [Kids] will appreciate Moon's inviting approach. --Booklist