Project SCORE, the world’s first communications satellite, was launched when and where?

Answer 1

The first artificial Earth satellite was Sputnik 1. Put into orbit by the Soviet Union on October 4, 1957, it was equipped with an on-board radio-transmitter that worked on two frequencies: 20.005 and 40.002 MHz. Sputnik 1 was launched as a major step in the exploration of space and rocket development.