Once, Korolev was asked, 'Who can guarantee that the Moon is solid?' The answer to this question could have cost lives; no one wanted to take the responsibility. But Korolev tore off a piece of newspaper and confidently wrote, 'The Moon is solid,' and signed it. He was right. This book will tell children about an amazing man, without whom the USSR's space victories would not have been possible. Sergei Korolev was not only a talented designer but also a brilliant manager and leader, able to find common ground with people, maintain composure under stress, and take responsibility for others.