Albert Einstein safely arrived in the US after fleeing Nazi Germany.
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Albert Einstein's theory of gravitational redshift was proven after a telescope in Chile observed a black hole.
Albert Einstein presents his general theory of relativity.
Albert Einstein completed his doctoral thesis at the University of Zurich and was awarded a Ph.D.
US President Franklin D. Roosevelt received a letter from Albert Einstein detailing the possibility of atomic weapons.
Albert Einstein visited New York City and lectured on his Theory of Relativity for the first time.
