Alexander Friedmann

Alexander Friedmann was a Russian physicist and mathematician known for his groundbreaking work in cosmology in the early 20th century. He developed mathematical models describing an expanding universe, building on Einstein's theory of general relativity. Friedmann's equations illustrated how the universe could change over time, leading to the understanding of cosmic expansion, which later supported the Big Bang theory. His research laid the foundation for modern cosmology, helping scientists understand the structure, origins, and evolution of the universe we observe today.