内容简介：
An important series of books that tells the dramatic stories behind the great discoveries of science. From the nature of the atom to the age of the universe, your students will read about the great scientists who asked the questions, and followed the process of discovery that helped us to understand these momentous scientific answers.A history of the discovery of the origin of our universe in the event known as the "big bang, " and the story of how scientists determined the structure and age of the universe and how the galaxies and stars within it formed.