Discovery Channel

NASA 50th Anniversary Communications Satellites

Communications Satellites

 (NASA)
In October 1945, Arthur C Clarke’s article "Extra Terrestrial Relays: Can Rocket Stations Give World Wide Radio Coverage?" was published in Wireless World. It theorized that geostationary satellites, orbiting Earth once every 24 hours, could relay messages transmitted to them, from one point on the Earth to another.

Today’s 'global village' is a direct descendant of Clarke’s theory. NACA began work on telecommunications experiments in the late 1950s, and NASA took on the research in the 1960s. In 1958 America launched the first communications satellite (SCORE). Project Echo followed in 1960 when Echo 1 became the first passive communications satellite. It was an enormous, 100-foot balloon, placed in low Earth orbit, reflecting the signals transmitted to it, back to Earth.

Telstar‘s Relay satellite, launched in 1962, went on to became the first satellite to transmit live images to the world, televising the torch-carrying ceremony for the 1964 Tokyo Olympics.

In 1965, Intelsat 1, the "Early Bird", was launched. It was the first commercial communications satellite. Positioned over the Atlantic, Early Bird provided two-way television between Europe and North America for the first time.
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