Sputnik
less than 1 minute Today is birthday of Sputnik, the first artificial earth satellite. Was released 4 October 1957 the Soviet Union. Sputnik was a sphere about 58,5 cm and weighing 83,6 kg. He had no function, unless transmitting a radio signal, “beep”, that could be tuned by any radio-amateur. The satellite orbited the Earth for six months before falling. It is for nothing, but whoever wants to listen to the Sputink radio broadcast Continue→