<p>On Oct. 4th, 1957, at 10:29 PM Moscow time, the Soviet Union successfully launched Sputnik 1 into space on a repurposed R-7 rocket. The world’s first artificial satellite, Sputnik was about 22 inches (58 centimeters) in diameter and weighed 184 pounds (84 kilograms). Although there were no scientific instruments aboard, the transmitter it carried sent<a class="more-link" href="https://www.astronomy.com/today-in-the-history-of-astronomy/oct-4th-1957-sputnik-launches/">Continue reading <span class="screen-reader-text">"Oct. 4th, 1957: Sputnik launches"</span></a></p> <p>The post <a href="https://www.astronomy.com/today-in-the-history-of-astronomy/oct-4th-1957-sputnik-launches/">Oct. 4th, 1957: Sputnik launches</a> appeared first on <a href="https://www.astronomy.com">Astronomy Magazine</a>.</p>

On Oct. 4th, 1957, at 10:29 PM Moscow time, the Soviet Union successfully launched Sputnik 1 into space on a repurposed R-7 rocket. The world’s first artificial satellite, Sputnik was about 22 inches (58 centimeters) in diameter and weighed 184 pounds (84 kilograms). Although there were no scientific instruments aboard, the transmitter it carried sentContinue reading “Oct. 4th, 1957: Sputnik launches”

The post Oct. 4th, 1957: Sputnik launches appeared first on Astronomy Magazine.