events
Sputnik 1 becomes the first artificial satellite to orbit the Earth.
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Sputnik 1
First artificial Earth satellite
Sputnik 1, sometimes referred to as simply Sputnik, was the first artificial Earth satellite. It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October 1957 as part of the Soviet space program. It sent a radio signal back to Earth for three weeks before…Source: Wikipedia (CC BY-SA)
October 4
Day of the year
October 4 is the 277th day of the year in the Gregorian calendar; 88 days remain until the end of the year.Source: Wikipedia (CC BY-SA)