When was Albert Einstein alive?

Albert Einstein was born on March 14, 1879, and died 76 years later, on April 18, 1955. He is best remembered for his groundbreaking work on the general theory of relativity and the famous equation E = mc².

Einstein lived in a time of great upheaval. Born in Germany of Jewish descent, he was in the United States when Hitler rose to power, so Einstein opted not to return home, becoming an American citizen instead. He formulated the general theory of relativity, which is considered one of the most important concepts in the study of physics. He also proved that mass is energy.