In this alternate history novel, a cataclysmic meteorite strike in the 1950s accelerates the space race due to fears of Earth becoming uninhabitable. The story follows a brilliant mathematician and former WASP pilot who battles the era's sexism and racism to become an astronaut. She and her diverse colleagues work against time to colonize space and ensure humanity's survival, while she also deals with personal struggles and the psychological toll of her ambitions. The narrative combines the tension of space exploration with the social dynamics of mid-20th century America, creating a compelling vision of what might have been if women had been at the forefront of the space race.

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