On this day in 1957, the Soviets open a new front in the Cold War with the launch of history’s first human-made satellite, Sputnik I. For 21 days the 184-pound, basket ball-sized orbiter transmits a constant radio signal back to Earth: “Beep… Beep… Beep!” pic.twitter.com/NpHnENw3Cr
— Military History Now (@MilHistNow) October 4, 2024