Relentless Moon. A Lady Astronaut Novel, Paperback/Mary Robinette Kowal

The Earth is growing hotter, governments clash, riots plague the space program. The evacuation of the planet is under threat. And Elma York is on her way to Mars. Her friend and fellow astronaut Nicole Wargin is thrilled to be on the pioneering mission - but less happy that her husband, the Governor of Kansas, is considering a run for President.