Many people will remember the wonder of hearing the regular 'beeps' of the radio signal transmitted from Sputnik as it orbited Earth, sounding rather plaintive and lonely. This little momento of ...

This pattern enabled a consistent signal as the satellite ... two of which powered the radio transmitter and one powered the ...

As the Sputnik satellite orbited the Earth it sent back a radio signal that was picked up around the world. A new era of human exploration and achievement had dawned. Sputnik was followed a month ...

In 1957, the Soviet Union launched Sputnik 1, the world's first artificial satellite, into space orbit. The man-made craft sent a radio signal back to Earth for three weeks before its batteries ...