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Science & Nature • Space Exploration

Laika (dog)

Laika was a Soviet space dog who became the first living creature to orbit Earth.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 27, 2026|2 min read| Fact-checked

Laika was a Soviet space dog who became the first living creature to orbit Earth. Launched aboard Sputnik 2 on 3 November 1957, she died hours later from overheating and stress. Her flight provided early biological data from space and became one of the most famous moments in the history of space exploration.

Early life and selection

Laika was a stray dog found in Moscow and later chosen for the Soviet space program. Sources describe her as a mongrel and note that she was trained alongside other dogs before selection.

Sputnik 2 mission

Laika launched aboard Sputnik 2 on 3 November 1957, making her the first animal to orbit Earth. The spacecraft was not designed for a return mission, so her survival had not been planned.

Death and aftermath

Laika died a few hours after launch, most likely from overheating and stress. For years, Soviet officials gave incomplete accounts of her fate, and the true circumstances were revealed later.

Scientific and historical significance

Although Laika did not survive, the mission showed that a living passenger could be launched into orbit and provided some of the first biological data on spaceflight. Her flight is widely seen as an important step toward later human missions.

Key facts

  • Laika was a stray dog from Moscow selected for the Soviet space program.
  • She flew aboard Sputnik 2 on 3 November 1957 and became the first living creature to orbit Earth.
  • Laika did not survive the mission; she died within hours from overheating and stress.
  • The mission was designed to test whether a living organism could survive launch and conditions in orbit.
  • Sputnik 2 re-entered Earth's atmosphere and burned up on 14 April 1958.
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Canadian context

Laika’s mission is relevant to Canadian readers as a landmark in the global history of space exploration and bioastronautics, fields that later influenced international and Canadian space science.

Frequently asked questions

Who was Laika?
Laika was a Soviet space dog and the first living creature to orbit Earth.
When did Laika go to space?
She launched on 3 November 1957 aboard Sputnik 2.
Did Laika survive the flight?
No. She died within hours of launch, likely from overheating and stress.
Why was Laika sent into space?
The mission was intended to test whether a living organism could survive launch and orbit, helping scientists study the biological effects of spaceflight.
Was Laika the first animal in space?
She was one of the first animals in space and the first animal to orbit Earth.
What happened to Sputnik 2?
Sputnik 2 remained in orbit for several months and burned up on re-entry on 14 April 1958.

References

  1. Wikipediahttps://en.wikipedia.org/wiki/Laika
    Supports: Basic biographical details, mission date, and historical overview.
  2. Space.comhttps://www.space.com/laika-space-dog
    Supports: Laika as the first living creature in orbit and launch aboard Sputnik 2.
  3. NASAhttps://www.nasa.gov/history/60-years-ago-the-first-animal-in-orbit/
    Supports: Mission purpose, launch date, and Sputnik 2's re-entry date.
  4. Encyclopaedia Britannicahttps://www.britannica.com/animal/Laika
    Supports: Laika as the first living creature launched into Earth orbit.
  5. Scientific Americanhttps://www.scientificamerican.com/article/remembering-laika-the-dog-s-trip-to-space-57-years-later/
    Supports: Stray origin, real name, and reported death from overheating.
  6. HISTORYhttps://www.history.com/this-day-in-history/november-3/the-soviet-space-dog
    Supports: Launch details, life-support instrumentation, and reported cause of death.