Albert Einstein's theory of gravitational redshift was proven after a telescope in Chile observed a black hole.
Researchers announced that gravitational waves had been discovered.
Genius Albert Einstein died due to heart failure at age 76.
Albert Einstein warned against hydrogen bombs on the ''Today with Mrs. Roosevelt" weekly TV show.
US President Franklin D. Roosevelt received a letter from Albert Einstein detailing the possibility of atomic weapons.
Albert Einstein safely arrived in the US after fleeing Nazi Germany.
Albert Einstein visited New York City and lectured on his Theory of Relativity for the first time.
Albert Einstein presents his general theory of relativity.
Albert Einstein submits a paper outlining his theory of special relativity.
Albert Einstein completed his doctoral thesis at the University of Zurich and was awarded a Ph.D.
Albert Einstein wrote his first paper on the Quantum Theory of Light.
