"Isaac Asimov (/ˈæzɪmɒv/;[b][c] c. January 2, 1920[a] – April 6, 1992) was an American writer and professor of biochemistry at Boston University. He was known for his works of science fiction and popular science. Asimov was a prolific writer who wrote or edited more than 500 books and an estimated 90,000 letters and postcards.[d] His books have been published in 9 of the 10 major categories of the Dewey Decimal Classification.
The electrifying sequel to Caves of Steel in which Elijah Baley is once more teemed up with R. Daneel. The two must travel to Solaria, where no human has gone in over a thousand years... Reacting in fear against the technological superiority of the Outer Worlds, the people of Earth have hidden themselves in vast underground cities, nursing a hatred for Spacers. The fifty Outer Worlds of the Spacers together are home to fewer people than planet Earth. And home to many, many more robots. Earthmen hate Spacer robots, too... But Baley doesn't. He once had a robot partner, R. Daneel - and when the authorities of the planet Solaria request terrestrial assistance in investigating a murder, Baley is once again teamed with Daneel. He is the first Earthman in a millennium to travel to the Outer Worlds...and he must endure the glare of a sun far more deadly than Earth's.