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Maurer shines a deserved spotlight on Margaret Hamilton, whose computer code for the Apollo program was integral to the success of the 1969 moonshot. Readers meet her as a child in Michigan's Upper Peninsula, where she was brought up to be "curious, diligent, fearless, and a bit of a rebel"; her path eventually led to her joining the Instrumentation Lab at MIT. It was there that Hamilton helped write the code for the onboard computer, the Apollo Guidance Computer, that would control the astronauts' flight through space. Maurer draws on numerous personal interviews with Hamilton to reveal her character; she comes across as determined, brilliant, and confident yet self-effacing. Maurer mirrors her methodical competence, weaving into his account contextualizing information about early computer science and the technological innovations that made the Apollo program possible. He details the functioning--and malfunctioning--of the AGC drive, the excitement of the test flights, and then Apollo 11 itself. Archival illustrations further enliven the narrative; a 1969 publicity photo of Hamilton steadying a tower of printed-out code is as effective now as it was then. A timeline, thorough source notes, an extensive bibliography, photo credits, and an index (unseen) round out this valuable addition to books about the space program.
Reviewer: Vicky Smith
| Horn Book Magazine Issue:
March, 2023