The book starts with the ideas of Aristotle and then examines how the work of Galileo, Kepler and Newton formed a new view of gravity. It goes on to look at the concept of escape velocity and space travel. Then we get to the anomalies of gravity. There's the discovery of Neptune from its gravitational effect, and the more revolutionary General Relativistic effect on the orbit of Mercury. This leads on to the cosmological constant, black holes and gravitational radiation. These anomalies are now understood, but there is also a chapter on more puzzling graviational anomalies which are as yet unexplained. The book concludes with a look at recent ideas on dark energy and a look at possibilities for unifying gravity with quantum theory.