Explore the Cosmic Frontier: 'Vacant Space' by Robert Norris

Design a sci-fi book cover image for a book with the title Vacant Space. Include the title once. Artificially intelligent human bodies host multiple human minds, threatening the stability of a global state regulated by a massive social network. Include the author's name once. The author's name is Robert Norris. Include subtle images of human brains. Pay attention to the spelling of both the title and the author. Avoid images of robots. Focus on human diversity. Include both men and women, also a mix of ethnicity.