1. ENIAC (1945)The Electronic Numerical Integrator and Computer (ENIAC) is broadly acknowledged as the inaugural large-scale, general-purpose electronic digital computer. Conceived at the University o...

1. The First Successful Use of Ether Anesthesia (1846)Before the mid-nineteenth century, surgery functioned as a brutal, last-resort intervention executed at lightning speed to minimize agony. On Octo...

1. Hubble Space Telescope (HST)Launched in 1990, the Hubble Space Telescope transformed modern astronomy by orbiting above Earth’s atmosphere, eliminating atmospheric distortion. With a 2.4-meter prim...

1. Sputnik 1 (1957)Sputnik 1, sent into space by the Soviet Union on October 4, 1957, became the inaugural artificial satellite to circle Earth. Weighing 83.6 kilograms, it broadcasted basic radio sig...