The prominent scientist recognized for his contributions to theories of relativity is Albert Einstein. His formulation of the theory of special relativity in 1905 revolutionized physics by introducing the relationship between space and time. Later, in 1915, he presented the general theory of relativity, which described gravity as curvature in spacetime caused by mass. Einstein's groundbreaking concepts challenged classical physics, provided insights into the behavior of light, and paved the way for advancements in modern cosmology and quantum mechanics. His work has profoundly influenced our understanding of the universe.