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Period: to
Satellites
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invention of the satellite
Oct. 4, 1957 Sputnik 1 was laonched. -
The second satellite
The Sputnik 2 was launched. -
US satellite
Feb. 1958 US launched Eplorer 1. -
First communication satellite
The first communication satellite was launched. -
Us and USSR
US and USSR launched 6 satellites inthe year 1958,14 in 1959,19 in 1950 and 351n 1961. -
Echo 1
Aug. 12 Us launched Echo 1, a passive reflector satellite and reflected radiation back to earth at the time it was thought to serve a purpose. The technology was soon abandoned. -
Telstar
The Telstar was launched the satellite was used to transmit television signals. -
Furture
We will not need satellites to transmit signals.