Raintree perspectives. Great scientific theories

Why does the rain fall? Why do rivers flow to the sea? The scientific theory of gravity answers these and many more questions we may have about this invisible force. This fascinating book looks at the historical controversies that surround the theory of gravity and tells the stories of the scientists who worked on the theory. It also examines how the theory of gravity was arrived at, how it was tested, and what impact the theory has had on our understanding...

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.