Steven Weinberg was an American theoretical physicist known for his significant contributions to the field of particle physics and cosmology. Born on May 3, 1933, he played a crucial role in the development of the Standard Model of particle physics, which describes the fundamental forces and particles in the universe. In 1979, he was awarded the Nobel Prize in Physics for his work on electroweak theory, which unifies the electromagnetic force and the weak nuclear force. Weinberg was also a prominent advocate for science and education, emphasizing the importance of scientific understanding in society. He authored several influential books, including "The First Three Minutes," which explains the early moments of the Big Bang. Throughout his career, Weinberg received numerous awards and honors, solidifying his legacy as one of the leading physicists of the 20th century.