Albert Einstein was born on March 14, 1879, in Ulm, Germany. As a child, he showed curiosity and a deep interest in mathematics and science. Although he initially struggled with the rigid school system, he excelled in physics and eventually attended the Swiss Federal Institute of Technology in Zurich, graduating in 1900. After struggling to find an academic position, he took a job at the Swiss Patent Office in 1902. In 1905, Einstein published four groundbreaking papers that changed physics forever. Among them was his theory of special relativity, which introduced the famous equation E=mc², demonstrating the relationship between mass and energy. His work also explained the photoelectric effect, which later became a foundation of quantum mechanics. Despite facing skepticism, his theories were soon recognized as revolutionary. In 1915, Einstein introduced his general theory of relativity, which redefined gravity as the curvature of space-time caused by massive objects. His theory was confirmed in 1919 when British astronomers observed light bending around the sun during a solar eclipse. This discovery made him an international celebrity. In 1921, he was awarded the Nobel Prize in Physics, primarily for his work on the photoelectric effect. With the rise of the Nazis in the early 1930s, Einstein, who was Jewish, left Germany and moved to the United States. He took a position at the Institute for Advanced Study in Princeton and became an advocate for peace and scientific progress. In 1939, he signed a letter to President Franklin D. Roosevelt, warning about the potential development of atomic weapons by Germany, which contributed to the start of the Manhattan Project. However, Einstein later regretted his involvement and became an outspoken advocate for nuclear disarmament. In his later years, Einstein worked on a unified field theory but was unable to complete it. He also spoke out on civil rights, world peace, and scientific ethics. He passed away on April 18, 1955, at the age of 76, leaving behind a legacy as one of the greatest scientists in history. His theories continue to shape our understanding of the universe today.