J. Robert Oppenheimer was an American theoretical physicist.
Konstantin Tsiolkovsky was a pioneering Russian rocket scientist and cosmonautics theorist, shaping future space exploration.
Christopher Clavius was a German Jesuit mathematician and astronomer who helped develop the Gregorian calendar and mapped the stars with precision.
Enrico Fermi was an Italian physicist and Nobel laureate known for his pioneering work in nuclear physics, including the development of the first nuclear reactor.
Paul Dirac was a British theoretical physicist, Nobel laureate, and a pioneer in the development of quantum mechanics.