Early Space Race Milestone: Launch of Sputnik 2 and Laika’s Orbital Flight
Summary
- Sputnik 2 was launched by the Soviet Union on 3 February 1957, becoming the world’s first artificial satellite to carry a living organism.
- The payload carried Laika, a stray dog from Moscow, marking the first time a living being was placed in orbit.
- The satellite weighed about 1,030 kg, achieved an elliptical orbit of 159 km × 1,310 km, and transmitted telemetry for several days.
- Laika survived only a few hours due to thermal control failure, but the mission proved that life‑support systems could function in space.
- The flight intensified the Cold War space rivalry, prompting the United States to accelerate its own human‑spaceflight program.
Key Facts
- · Launch date: 3 February 1957
- · Satellite mass: ~1,030 kg
- · Orbit: 159 km × 1,310 km, period ~103 minutes
- · First living creature in orbit: Laika (a female mongrel dog)
- · Mission duration of telemetry: 6 days
- · Laika’s death: within hours due to overheating
- · Purpose: test life‑support and re‑entry capabilities
- · Impact: spurred U.S. Project Mercury and the race to human spaceflight
Why it matters
Sputnik 2 demonstrated that living organisms could survive launch and micro‑gravity, laying the scientific foundation for human spaceflight and influencing Cold War geopolitics, making it a pivotal event in India’s own space ambitions and the global narrative of space technology.
#Space Race#Sputnik 2#Laika#Soviet Union#Bioastronautics#Cold War