Readers of Stephen Walker’s fine new account of how Yuri Gagarin, a 27-year-old Soviet air-force major (he was promoted from lieutenant while circling the Earth), became the first man in space will discover quite a bit about Gagarin the man, but a great deal more about the program that put him into orbit 60 years ago, on April 12, 1961.

Vasco da Gama, Gagarin was not. For all his skill, toughness, unflappability and courage, he was no explorer. In a way, he was merely the most important of all the fauna that the Soviets shot into space. The first astronauts had relatively little control over their capsules; the first cosmonauts had far less.