Thierry Montmerle – författare

This review emerged from several interdisciplinary meetings and schools gathering a group of astronomers, geologists, biologists, and chemists, attempting to share their specialized knowledge around a common question: how did life emerge on Earth? Their ultimate goal was to provide some kind of answer as a prerequisite to an even more demanding question: is life universal? The resulting state-of-the-art articles were written by twenty-five scientists telling a not-so linear story, but on the contrary, highlighting problems, gaps, and controversies. Needless to say, this approach yielded no definitive answers to both questions. However, by adopting a chronological approach to the question of the emergence of life on Earth, the only place where we know for sure that life exists; it was possible to break down this question into several sub-topics that can be addressed by the different disciplines.

The main chapters of this review present the formation and evolution of the solar system (3); the building of a habitable planet (4); prebiotic chemistry, biochemistry, and the emergence of life (5); the environmental context of the early Earth (6); and the ancient fossil record and early evolution (7). The concluding chapter (9) provides the highlights of the review and presents the different points of view about the universality of life. Two pedagogical chapters are included; one on chronometers (2), another in the form of a "frieze" (8) which summarizes in graphical form the present state of knowledge about the chronology of the emergence of life on Earth, before the Cambrian explosion.

This book illuminates a few highly significant events in history in which astronomers have helped keep contacts between astronomers of different states in moments of international political tensions or even crises. The chapters, written by 20 international authors, focus on four periods where astronomers were particularly active in international relations:

1. The WWI period, the epoch of the creation of the IAU, in the context of the simultaneous creation of other scientific unions. The book also singles out the important role of A.S. Eddington and his network “across forbidden borders”.

2. The Cold war period and its consequences, when several countries were divided between opposite blocs. “The China crisis” is told here from different viewpoints by Chinese astronomers, both from the mainland and from Taiwan, in parallel with the evolution of astronomy in South and North Korea. Germany’s twisted path in its membership of the IAU, from its admission in 1951 to its reunification in 1991 is shown as another example.

3. The book then highlights a third period, when radio astronomers, in particular, were very active in “building bridges” between East and West. It also tells the history of how the apparently innocuous issue of the “lunar nomenclature” became extremely sensitive. The part ends on two chapters on Russian robotic missions and lunar surface features as well on the Russian participation in the “International Virtual Observatory” project.

4. The fourth part reports for the first time on the “hidden story” of the relations between the IAU and the United Nations after the “Moon race” when the United Nations decided to challenge the IAU’s authority on “extraterrestrial names”. The final chapter reviews how twenty years later UNESCO and the IAU had become strong partners in the difficult, but highly successful organization of the International Year of Astronomy (2002-2009), and of the “Astronomy and World Heritage” intitiative (2008).

This book presents the exceptional biography of the 20th century Chinese astronomer Cheng Maolan, who came to France in 1926 on a China-France cooperation program to do his PhD with the idea of returning to China after a few years. Instead, he lived two lives. He first stayed in France and studied astronomy in Lyon, the “Silk city”, where he suffered the hardships of the German occupation, but also witnessed the construction of the Haute-Provence Observatory. After the war, he started a promising career at Lyon Observatory. However, in 1957 he decided to live a second life, by returning to the motherland, which had in the meantime become the People''s Republic of China. There, he suffered the hardships of the Cultural Revolution, but he managed to play a pivotal role in establishing the Beijing Observatory as its director. In particular, he prepared the ground for the Xinglong 2-m telescope, which saw its first light in 1989, ten years after his death.

Cheng Maolan is now considered a "Chinese hero": an "Astronomy and Technology Museum" was built and named after him in 2018, in his native city of Boye, Hebei Province, China, featuring a tall, white statue in front of the building.

Seen from “inside the IAU,” this book tells the in-depth story of a major crisis in which China “divorced” from the International Astronomical Union in 1960  as a protest against the admission of Taiwan. This happened to all the scientific unions at the same time, and to the Olympic Games, which, unexpectedly, would serve as a laboratory for the “reconciliation” which took place following the re-opening of China to the world 20 years later.

The so-called “China conflict” is the most important crisis in the post-WWII history of the IAU. Yet, many details about this conflict and its links to broader geopolitical events have long remained unsettled, obscure, or altogether absent. In particular, the book describes for the first time the “separation” period, which covered the Cultural Revolution, and in which the IAU made desperate official efforts to reach out to China, while some groups of Western and Chinese astronomers managed to keep contact at times. On the occasion of the IAU Centenary celebrations in 2019, the book revisits this painful succession of events using unpublished documents from the IAU Archives and the International Council of Scientific Unions. The book also contains supplementary typescripts of selected handwritten correspondences and the full translation of key original Chinese documents unknown to readers outside China.

What emerges is a complex and fascinating story of human relations and science diplomacy under the shadow of the Cold War. Readers will learn how the 20-year “China conflict” as lived by astronomers and scientists is important not only for the history of the IAU, but also for the history of contemporary China. 

“This book is full of so many original documents of the IAU office, very reliable and good to open to the public readers.” Shuhua Ye, Shanghai Observatory (IAU Vice-President, 1988-1994)

This book is a companion book to "Astronomers as Diplomats," published at the same time in the same series.