Every generation has looked up from the Earth and wondered at the beauty of the Moon. 50 years ago, a few Americans became the first to do the reverse - with the whole world watching through their eyes. In this short but wide-ranging book, Oliver Morton explores the history and future of humankind's relationship with the Moon. A counterpoint in the sky, it has shaped our understanding of the Earth from Galileo to Apollo. Its gentle light has spoken of love and loneliness; its battered surface of death and the cosmic. For some, it is a future on which humankind has turned its back. For others, an adventure yet to begin. Advanced technologies, new ambitions and old dreams mean that men, women and robots now seem certain to return to the Moon. What will they learn there about the universe, the Earth - and themselves? And, this time, will they stay?