Once in orbit, Sputnik 1 maintained an orbital speed of approximately eight km/s and completed one orbit every 96.2 minutes.

Decades ago during the heady space race rivalry between the former Soviet Union and the United States, the entire world ...

NASA October 4: The Soviet Union launches Sputnik 1 into earth orbit. The first man-made satellite passes overhead, making one revolution every 90 minutes. October 5: The Soviet daily newspaper ...