Alberto Einstein was a renowned physicist known for developing the theory of relativity, which revolutionized our understanding of space, time, and gravity. Born on March 14, 1879, in Ulm, Germany, he later moved to Switzerland, where he obtained his citizenship and worked at the Swiss Patent Office. His groundbreaking work earned him the Nobel Prize in Physics in 1921. Einstein's famous equation, E=mc², illustrates the relationship between energy and mass, showing that they are interchangeable. Throughout his life, he advocated for peace and civil rights, becoming a prominent figure in the scientific community and beyond until his death on April 18, 1955, in Princeton, New Jersey.