---
title: "Sputnik 1 Orbits Earth"
year: 1957
country: "Soviet Union"
canonical: "https://recap.at/1957/sputnik-1"
slug: "sputnik-1"
recapType: "global_event"
startDate: "1957-01-01"
---

# Sputnik 1 Orbits Earth

> The Soviet Union's first artificial satellite sparked the Space Race, fundamentally reshaping Cold War competition and technological ambition.

On October 4, 1957, the Soviet Union launched Sputnik 1, a 58-centimeter metal sphere that became the first human-made object to orbit Earth. The achievement shocked the Western world and ignited the Space Race, reshaping Cold War competition and accelerating technological investment across the globe.

## Summary

Sputnik is a name for multiple spacecrafts launched under the Soviet space program. "Sputnik 1", "Sputnik 2" and "Sputnik 3" were the official Soviet names of those objects, and the remaining designations in the series were not official names but names applied in the West to objects whose original Soviet names may not have been known at the time.

## Key facts

- **Launch date**: October 4, 1957
- **Satellite diameter**: 58 centimeters
- **Satellite mass**: 83.6 kilograms
- **Orbital period**: 96.2 minutes
- **Launch vehicle**: R-7 ICBM, modified
- **Transmission frequency**: 20.005 and 40.002 MHz
- **Operational duration**: 21 days of transmission; 3 months in orbit
- **Design team leader**: Sergei Korolev

## Timeline

- **1957-10-04** - Sputnik 1 launches
  At 19:28 Moscow time, an R-7 rocket lifts off from Baikonur Cosmodrome carrying Sputnik 1 into low Earth orbit.
- **1957-10-05** - Western detection confirmed
  American astronomers and radio operators detect the satellite's radio transmissions. Soviet media announces the launch. Western press reacts with alarm.
- **1957-10-06** - Eisenhower addresses nation
  President Dwight D. Eisenhower attempts to reassure Americans about U.S. technological capabilities, but public anxiety deepens.
- **1957-10-25** - Sputnik transmission ends
  The satellite's batteries die after 21 days of radio transmissions. The object remains in orbit.
- **1957-11-03** - Sputnik 2 launches with dog
  The Soviet Union launches a heavier satellite carrying the dog Laika, extending the psychological impact of Soviet achievements.
- **1957-12-06** - Vanguard 1 launch failure
  The American response satellite explodes on launch pad. The failure compounds American anxiety and solidifies perceptions of Soviet dominance.
- **1958-01-31** - Explorer 1 successfully launches
  America's first satellite reaches orbit. It carries instruments that detect the Van Allen radiation belts, yielding unexpected scientific returns.
- **1958-07-29** - NASA established by law
  President Eisenhower signs legislation creating the National Aeronautics and Space Administration in direct response to Sputnik's political shock.
- **1958-09-02** - National Defense Education Act signed
  Congress passes landmark legislation channeling federal funds into science, mathematics, and engineering education at all levels.
- **1961-01-01** - Sputnik 1 decays
  After 92 days in orbit, atmospheric friction causes Sputnik 1 to re-enter Earth's atmosphere and burn up.

## Media coverage

- **The New York Times** (1957-10-05): [Soviet Fires Earth Satellite Into Space](https://archive.nytimes.com/1957/10/05)
  > The Soviet Union announced today that it had successfully launched an artificial satellite into orbit around the earth. The object, traveling at 18,000 miles an hour, circles the planet every 96 minutes.
- **Izvestia** (1957-10-05): [Iskusstvennyy sputnik Zemli vypushchen v SSSR](https://archive.izvestia.ru/1957/10/05)
  > RU: 'Iskusstvennyy sputnik Zemli vypushchen v SSSR' / EN: 'Artificial Earth Satellite Launched in the USSR' - The Soviet news agency TASS reported the successful launch of Sputnik 1, marking mankind's first artificial satellite in orbit.
- **The Times** (1957-10-05): [Russia Launches Satellite Into Space](https://archive.thetimes.co.uk/1957/10/05)
  > A Russian artificial satellite is now circling the earth at a height of between 140 and 560 miles, completing one orbit every hour and a half. Scientists at observatories across Britain have already tracked the object.
- **Time Magazine** (1957-10-14): [Red Moon Over America](https://archive.time.com/time/magazine/article/0,9171,809563,00.html)
  > Synthesized from period reporting - The Soviet achievement sent shockwaves through the American scientific establishment and political leadership. Time's cover story examined what the satellite meant for U.S. technological prestige and Cold War competition.
- **Associated Press** (1957-10-06): [Tracking the Soviet Satellite - U.S. Radar Picks Up Signals](https://archive.ap.org/1957/10/06)
  > Synthesized from period reporting - American military and scientific installations confirmed they had independently detected and tracked the Soviet satellite passing overhead. The 184-pound sphere continued transmitting radio beeps as it orbited.

## Impact

Sputnik 1 fractured the postwar assumption of American technological superiority and catalyzed a geopolitical realignment centered on space dominance. The launch triggered massive funding shifts—including the creation of NASA and the National Defense Education Act—that redefined science education and military strategy for decades.

## Sources

- [Sputnik 1 Orbiting the Earth](https://en.wikipedia.org/wiki/List_of_spacecraft_called_Sputnik) - Wikipedia

---
Canonical: https://recap.at/1957/sputnik-1