Books like The Ophiuchi Hotline

After the effortless capture of Earth by vastly superior aliens, humanity is forced to fight for existence on the Moon and other lumps of airless rock. The invention of the Hotline -- a constant stream of data from a star in the constellation Ophiuchus -- facilitates survival and enables the development of amazing new technologies. Then, after 400 years, humanity's unknown helpers send a bill for their services...and suddenly everything is threatened once again.The Ophiuchi Hotline was John Varley's first novel, and it received nominations for both the Hugo and Nebula awards; he later won both for his book Persistence of Vision."Varley's tight, clean writing, full of wit and good humor, evokes despair, joy, anger, and delight. His Luna is packed with wild inventions, intriguing characters, and stunning scenery."--Publishers Weekly"It is fast and complex, and it glitters most impressively."--Science Ficiton: The 100 Best Novels"John Varley is the best writer in America."--Tom Clancy"This is a novel rich in societies, settings, and technological wizardry. It's a tough-minded, yet a playful book."--Ian Watson