With an unparalleled array of science topics to choose from, Discovery Channel School Science puts the fascination of the natural world at students' fingertips. Fun, fast-paced, high-interest text and vibrant photography in a varied format bring to life the wonders of nature as young scientists learn about the important historical figures, ideas, and discoveries that help researchers understand the past and keep science moving toward the future. Activities abound and insights await in Discovery Channel School Science It's impossible to be sure what really happened, but many scientists believe there was a time when all space was condensed into something the size of a pinpoint. In The Viruses take a closer look at stars, celestial objects, and galaxies.