The Fated Sky by Mary Robinette Kowal
Set in an alternate 1961 where a meteorite has devastated the Earth and accelerated the space race, the narrative follows an astronaut as she navigates the complexities of space exploration and her role in the international effort to colonize Mars. Facing both technical challenges and social dynamics within the crew, she must contend with the era's pervasive sexism and political tensions, all while dealing with the personal sacrifices required for humanity's survival. The book blends historical detail with speculative fiction, exploring themes of duty, ambition, and the drive for scientific advancement against the backdrop of an alternate history of the space program.