“The aim of the book is to offer a research review paper in each field, based on published papers. The result is a laborious work that exhaustively shows readers the circumstances in which Japan was able to participate in world astronomical research after the Edo period. Since then, Japanese astronomy research has greatly developed through the promotion of many international collaborative projects.” (Hideyuki Kobayashi, Journal for the History of Astronomy, Vol. 56 (2), February, 2025) “I cannot but help admiring his enthusiasm and efforts in writing this book. As one of the author’s compatriots, I welcome the publication of this book and encourage overseas astronomical historians and scientists to read it in order to correctly understand the modern history of astronomy in Japan.” (Tsuko Nakamura, Journal of Astronomical History and Heritage, 24 (4), 2021)“The book abounds with portraits of nearly forty Japanese gentlemen, with detail of their education and careers, together with clear, well-illustrated, well-referenced, concise summaries of their astronomical achievements. … I was generally impressed. After a slow start in the 19th Century, we read an intriguing story of just what an industrious and hard-working nation can achieve.” (David W. Hughes, The Observatory, Vol. 141 (1285), December, 2021)