Phases of Gravity — Dan Simmons

Richard Baedecker thinks his greatest challenge was walking on the moon, but then he meets a mysterious woman who shows him his past. Join Baedecker as he comes to grips with the son and wife he lost in his passion for space exploration, his forgotten childhood and the loss he experienced during the death-flight of the Challenger. The most difficult exploration of his life is not the cold, rocky crevices of the moon, but the warm interior of his heart. Brilliant and beautifully written, PHASES OF GRAVITY is a masterpiece about love and loss that transports readers far beyond the confines of space and time.