On 3 November 1957, the Soviet Union launched Sputnik 2 into space with a small dog named Laika aboard, making her the first animal to orbit Earth. The historic mission marked another major milestone in the Space Race, but it also became one of its most tragic episodes.
Laika, a stray dog picked up from the streets of Moscow, was selected for the mission as Soviet scientists sought to understand how living organisms would respond to space travel.
Originally named Kudryavka, meaning ‘Little Curly’, she was a mixed-breed dog, often described as having Siberian Husky features. She underwent training to prepare for the launch, including exposure to confined spaces, loud noises and the physical conditions associated with spaceflight.
A historic launch with no return planned
Sputnik 2 was launched less than a month after the Soviet Union sent Sputnik 1, the world’s first artificial satellite, into orbit on 4 October 1957.
The second spacecraft was considerably larger and carried scientific equipment designed to monitor Laika’s vital signs, including her heart rate, breathing and blood pressure.
However, the mission had a fundamental limitation: there was no system to bring Laika safely back to Earth. Soviet engineers had not developed a re-entry mechanism, meaning the dog was never expected to survive the journey.
Laika successfully reached orbit, completing a historic first for an animal in space. However, problems with the spacecraft’s temperature-control system caused conditions inside the capsule to become dangerously hot.
Laika’s death and the legacy of the mission
Laika died during the mission, most likely within hours of launch, from overheating and stress. Soviet authorities initially suggested that she had survived for several days, but information revealed years later confirmed the true circumstances of her death.
Sputnik 2 continued orbiting Earth without its passenger before re-entering the atmosphere and burning up on 14 April 1958.
Despite the tragic outcome, the mission provided scientists with valuable information about the biological effects of spaceflight and contributed to preparations for future human space missions.
Nearly three and a half years later, on 12 April 1961, Soviet cosmonaut Yuri Gagarin became the first human to travel into space and orbit Earth.
Laika’s journey remains a significant moment in the history of space exploration, while also raising lasting questions about the ethical treatment of animals in scientific research.
Also read: ON THIS DAY: BBC launches first HD television broadcast (1936)
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