The book "Scientific works in two volumes . Volume 2" written by the outstanding Soviet astronomer and astrophysicist B. A. Ambartsumian, is a unique collection of scientific research and discoveries that have had a significant impact on the development of astronomy in the 20th century. This volume, like its predecessor, is not only an important contribution to scientific literature, but also a real treasure for all who are interested in the cosmos and its secrets. The second volume contains works covering a wide range of topics related to astrophysics, cosmology and stellar evolution. The reader will be able to immerse himself in in-depth research concerning the structure and dynamics of stellar systems, as well as gain insight into the theoretical foundations underlying modern astronomical observations. Ambartsumian shares his views on the nature of black holes, neutron stars and other exotic objects, which still remain the subject of active scientific discussions. This book will be of interest not only to specialists in the field of astronomy and physics, but also to a wide audience, including students, graduate students and everyone who is passionate about science. If you have ever thought about how our cosmos is arranged, how stars are formed and what secrets the Universe hides, then “Scientific works in two volumes . Volume 2" will be a real discovery for you. The book is suitable for both professionals and amateurs who want to expand their knowledge of space. The topics raised in the book go beyond pure science. Ambartsumian touches upon the philosophical aspects of astronomy, reflecting on man's place in the universe and how our ideas about the cosmos have changed over the centuries. His work encourages the reader not only to think about scientific facts, but also about how these facts affect our perception of the world. This makes the book especially valuable in the context of modern scientific discourse, where not only information is important, but also the ability to ask the right questions. Ambartsumian's style is clear and accessible, which allows even complex concepts to be explained in simple language. His ability to combine deep scientific knowledge with a fascinating narrative makes reading not only useful, but also enjoyable. In this volume, as in his other works, the author feels a passion for astronomy and a desire to share his experience with readers. In addition to scientific research, the . A. Ambartsumian is known for his other significant works, such as "Fundamentals of Astrophysics" and "Stars and Their Evolution", which also deserve attention. These works, like this volume, are important milestones in the development of astronomical science and can serve as an excellent addition to the library of any lover of science. If you’re looking for a deep, grounded, and inspirational read about the cosmos, “Scientific Works in Two Volumes . Volume 2 will become for you not only a source of knowledge, but also a reason to think about our place in the vast expanses of the Universe. Do not miss the opportunity to touch the heritage of one of the greatest minds of his time and expand your horizons in the world of astronomy.