Was a Hungarian-born American nuclear physicist who was instrumental in the production of the first atomic bomb as well as the world’s first thermonuclear weapon, Hydrogen bomb.
Albert Abraham Michelson was an American physicist known for his work on the measurement of the speed of light and especially for the Michelson–Morley experiment
Carl Edward Sagan was an American astronomer, astrophysicist, cosmologist, author, science popularizer and science communicator in astronomy and natural sciences