This groundbreaking resource is the first book to offer a thorough, practical treatment of laser space communications. The book focuses on the feasibility of laser communication links between satellites, satellites and airborne platforms, satellites and ocean platforms,and satellites and ground-based stations to achieve worldwide connectivity. Supported by over 70 illustrations and more than 100 equations. Contents: Ch. 1: Introduction Ch. 2: The Signal Power Budget for Intersatellite Links and Potential Mars-to-Earth Links Ch. 3: Acquisition Tracking and Pointing Ch. 4: Satellite Downlink Through the Atmosphere Ch. 5: Uplink Laser Communication Through the Atmosphere Ch. 6: Terrestrial Laser Communication Links and Weather Issues Ch. 7: The Fifth-Generation Internet System Ch. 8: Passive Reflector Configurations Ch. 9: Unique Applications of Laser Communications