https://en.wikipedia.org/wiki/Culture_series
A series of novels exploring the political, economic, social, and military history of a galactic-scale, post-material-scarcity, post-singuarlty, and post-captialism society. Features godlike AIs embodied in hundred-cubic-kilometer starships!
The moon has been destroyed. What do we do?
An astronaut on a mission to Mars is stranded with a broken leg after a sandstorm forces the rest of his crew to evacuate without him.