Introduces the solar system, sharing information on how scientists study space, how stars are born and die, and how astronauts train for space missions.

How do we know that the Sun is at the center of our solar system? This scientific theory is know as heliocentrism. This fascinating book looks at the historical controversies that surround the theory of heliocentrism and tells the stories of the scientists who worked on the theory. It also examines how the theory of heliocentrism was arrived at, how it was tested, and what impact the theory has had on our understanding of science today.