The cover image shows a functional model of the Earth’s astronomical cycles machine, illustrating climatic changes throughout the process of:
1.) 100,000 years,
2.) 46,000 years,
3.) 26,000 years.
Milutin Milanković was one of the most significant scientists of his time and one of the most widely cited authors in the natural sciences. Although he rarely engaged in self-promotion, he spoke most clearly about his work and scientific path through his writings, especially in the book Through Space and Time. Because of this unique combination of scientific precision and philosophical breadth, many have rightly described him as a “traveler through space and time,” a description permanently associated with his name.
Milanković was a versatile scientist: a mathematician, geophysicist, astronomer, engineer, and one of the founders of modern climatology. His understanding of long-term climate change was based on precise analyses of variations in Earth’s orbit and axial tilt, through which he mathematically explained the alternation of ice ages and warm periods in Earth’s geological past.
His most famous scientific contribution is known today as Milanković cycles. Through this theory, he linked changes in orbital eccentricity, axial tilt, and precession to rhythmic climate variations on Earth. In doing so, he demonstrated that climate change is not random, but follows long-term, regular, and measurable laws.
A special place in his work is occupied by the so-called canon of insolation, in which he calculated and described the amount of solar radiation received by the planets of the Solar System. These calculations laid the foundations of mathematical climatology and enabled the development of modern climate models. It is therefore justified to say that Milanković “described the rhythm of the universe with mathematical formulas,” transforming natural cycles into precise scientific laws.
Less widely known is the fact that Milanković also developed one of the most precise calendars of his time, which later served as a basis for improvements to the modern Gregorian calendar. In this way, his work gained a practical and everyday application.
Milanković spent most of his academic career in Belgrade, where he served as a professor and one of the leading authorities in astronomy and celestial mechanics. He also participated in the re-establishment of the Commission for Celestial Mechanics of the International Astronomical Union, in which he was an active member from 1948 to 1953.
His scientific career began in the field of engineering sciences. He earned his doctorate in 1904 with a dissertation on the theory of concrete and the design of concrete structures. In the early phase of his career, he worked on the design of bridges, dams, and reinforced-concrete buildings, and developed and patented new structural approaches in construction. He was employed by Viennese engineering firms and participated in numerous infrastructure projects throughout the Austro-Hungarian Empire.
The year 1909 marked a turning point in his life. He left Vienna and moved to Belgrade, where he accepted a professorship at the University. He remained there for the next forty-six years, and it was during this period that he began his intensive work on celestial mechanics and mathematical climatology, the fields for which he would permanently secure his place in the history of science.
