Winner of the 2019 Nebula, Locus and Hugo Awards!One woman. One mission. One chance to save the world.It''s 1952, and the world as we know it is gone. A meteorite has destroyed Washington DC, triggering extinction-level global warming. To save humanity, the world unites to form the International Aerospace Coalition. Its mission: to colonise first the Moon, then Mars. Elma York, World War Two pilot and mathematician, dreams of becoming an astronaut – but prejudice has kept her grounded. Now nothing – and no man – will stop her from reaching for the stars.