Academician Jaan Einasto Presents His Landmark Monograph “Spinning the Cosmic Web”

On Thursday, 12 March at 11:00, the University of Tartu Museum will host the presentation of Spinning the Cosmic Web, a major new monograph by Academician Jaan Einasto, Honorary Doctor of the University of Tartu and one of the world’s most influential astrophysicists. The event will take place in the White Hall of the University of Tartu Museum.

Spinning the Cosmic Web represents the culmination of Einasto’s lifelong research into the large-scale structure of the Universe. Written in collaboration with leading experts in the field, the book offers a comprehensive and observationally grounded introduction to modern cosmology. It guides the reader from the historical development of cosmological ideas to the latest insights into the formation of galaxies, the role of dark matter, and the emergence of the cosmic web.

Unlike traditional cosmology textbooks, this work places strong emphasis on empirical evidence and the comparison of observations with numerical simulations. The authors explore both linear and non-linear processes, highlighting how galaxies form and evolve within the intricate network of clusters, filaments, voids and walls that make up the cosmic web. The book’s ten chapters are divided into two major parts: the first devoted to the structure and evolution of the cosmic web, and the second to galaxies and their development within this environment.

A distinctive feature of the monograph is its use of dialogue-based chapters, in which three fictional cosmologists—a seasoned professor, an early-career researcher and an enthusiastic graduate student—engage in lively discussions about the concepts, uncertainties and open questions in cosmology. This “trialogue” format illuminates the scientific process itself: how hypotheses are formed, how disagreements are resolved, and how new ideas emerge. Reviewers have praised this approach for making complex material more accessible and for capturing the spirit of contemporary cosmological research, where many fundamental questions remain unresolved.

International experts have described Spinning the Cosmic Web as “an authoritative and up-to-date account of nearly every aspect of modern cosmology,” noting that the book goes beyond summarizing established knowledge. It directly addresses the challenges facing the Standard Model of Cosmology and encourages readers to think critically about the assumptions underlying current theories.

Jaan Einasto is widely regarded as one of the pioneers of modern cosmology. His groundbreaking work in the 1970s on the distribution of galaxies and galaxy clusters provided key evidence for the existence of dark matter, reshaping our understanding of the Universe. His contributions have influenced generations of researchers and helped establish the cosmic web as a central concept in astrophysics.

The Tartu Observatory invites all members of the academic community, students, and the general public to join the presentation.