📅 4 October 1957
The Soviet Union launched the first artificial Earth satellite from a spaceport in the Kazakh Soviet Republic.
📅 4 October 1957
Sputnik 1 began transmitting radio beeps as it orbited Earth, opening new possibilities for tracking a satellite.
📅 4 October 1957
Radio signals from Sputnik could be received outside the launch program, making the orbit publicly observable.
📅 4 October 1957
The successful launch created a new platform for studying Earth and, later, the wider universe.
