Sputnik 1 (PS-1), the world's first artificial Earth satellite, launched on an R-7-derived 8K71PS from Baikonur on 4 October 1957. The 83.6 kg polished sphere and its radio beeps opened the Space Age and triggered the U.S.–Soviet Space Race.
- Outcome
- Success
- Orbit
- LEO
- Low Earth orbit
- Payload to orbit
- 84 kg
- Flight
- 1st
- of 2 Sputnik 8K71PS flights
- Date and time
- 4 October 1957, 19:28 UTC
- Rocket
- Sputnik 8K71PS
- Builder
- RKK Energia
- Launch site
- 1/5, Baikonur Cosmodrome, Republic of Kazakhstan
- Payload
- Test Flight
- International designator
- 1957-001
- Launches in 1957
- 1st of 3
See it in orbit
Space Atlas shows the satellites and rocket stages from this launch in 3D.
Object pages on Space Atlas: Sputnik 1
View satellites in Space Atlas