oct 4, 1957 - Sputnik 1
Description:
Sputnik 1 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 its three silver-zinc batteries ran out.Added to timeline:
Date:
oct 4, 1957
Now
~ 68 years ago