The scientist celebrated for developing the theory of general relativity is Albert Einstein. Introduced in 1915, this groundbreaking theory revolutionized our understanding of gravity and its effects on the fabric of space-time. Einstein proposed that massive objects, like planets and stars, warp space-time around them, influencing the motion of other objects. His work laid the foundation for modern cosmology, changing the trajectory of physics. Einstein's insights not only explained astronomical phenomena but also paved the way for technologies such as GPS, demonstrating the far-reaching impact of his theories beyond theoretical physics.