Mary Robinette Kowal continues the grand sweep of alternate history begun in The Calculating Stars, The Fated Sky looks forward to 1961, when mankind is well-established on the moon and looking forward to its next step: journeying to, and eventually colonizing, Mars.

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Of course the noted Lady Astronaut Elma York would like to go, but there's a lot riding on whoever the International Aerospace Coalition decides to send on this historic—but potentially very dangerous—mission? Could Elma really leave behind her husband and the chance to start a family to spend several years traveling...