Milutin Milanković

Born in Serbia in 1879, Milanković trained as a civil engineer and spent early years designing reinforced concrete structures across the Balkans, filing patents along the way. But his mind reached further: he turned to mathematics and astronomy, eventually joining the University of Belgrade as a professor of celestial mechanics. There he calculated how shifts in Earth's orbit and tilt alter the sunlight reaching its surface - the "Canon of the Earth's Insolation" - and used that framework to explain the ice ages written into rock. He extended the method to Mercury, Venus, Mars, and the Moon, founding planetary climatology in the process. By the time he died in 1958, he had bridged two worlds: the precision of orbital mechanics and the sprawl of Earth's climate history, turning description into prediction.