1962: Communications Satellite
Telstar is launched as the first “active” communications satellite—active as in amplifying and retransmitting incoming signals, rather than passively bouncing them back to Earth. Telstar makes real a 1945 concept by science-fiction author Arthur C. Clarke, who envisioned a global communications network based on geosynchronous satellites. Two weeks after Telstar’s debut, President Kennedy holds a press conference in Washington, D.C., that is broadcast live across the Atlantic.
Honorable mention: Computer Mouse, LED, Video Games