Sputnik 2

• 1. Geopolitical Origins And Development

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  Nikita Khrushchev demanded a new satellite launch by early November 1957, just three weeks after Sputnik 1 had orbited the Earth. The Soviet leader wanted to mark the 40th anniversary of the Bolshevik revolution with a dramatic display of technological power. Sergei Korolev, head of OKB-1, scrambled to assemble a spacecraft that could meet this impossible deadline. Engineers took an existing payload container from suborbital dog missions and installed it in the upper stage of an R-7 rocket. No provision was made for recovery or separation from the rocket core. The design process moved from complex Object D proposals to simple PS satellites simply because time ran out. Resolution #149-88 approved the project on the 30th of January 1956, but the final decision to fly Laika came only days before launch.

• 2. The Engineering Of A Cone-Shaped Capsule

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  Sputnik 2 weighed around 508 kilograms when launched into orbit alongside its Blok A rocket stage. The cone-shaped capsule featured a base diameter of 2 meters and housed radio transmitters and telemetry systems inside. Thermal insulation failed shortly after launch due to the loss of some protective layers during separation. Temperatures soared inside the cabin as the sun heated the metal structure without any cooling mechanism. The satellite did not separate from the rocket core that brought it to orbit, adding mass to the total system. This design choice meant the spacecraft would tumble end over end during reentry phases later in its life. Scientists mounted spectrophotometers in the nose cone above the spherical PS section to measure solar radiation.

• 3. Selection And Preparation Of Laika

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  Laika, formerly named Kudryavka, was chosen from ten candidates provided by the Air Force Institute of Aviation Medicine. Her even temperament made her stand out among dogs already trained for suborbital missions. Telemetry wires were surgically attached to monitor respiration frequency, pulse, and blood pressure throughout the flight. She weighed about 6 kilograms and wore a harness with electrodes to track vital signs. Food and water were dispensed in gelatinized form through an automatic feeder system. A television camera transmitted 100-line video frames at 10 frames per second to observe her movements. Albina served as backup but never flew on this mission despite previous R-1E experience.

• 4. The Launch And Orbital Trajectory

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  Telemetry data showed Laika was agitated but eating her food shortly after reaching orbit. Her respiration increased between three and four times the pre-launch rate during peak acceleration phases. Soviet scientists had planned to euthanize her with poisoned food as a final measure. For decades, conflicting statements claimed she died from asphyxia when batteries failed or from planned poisoning. In October 2002, Dimitri Malashenken revealed she actually died by the fourth circuit of flight due to extreme heat. It proved practically impossible to create a reliable temperature control system within such limited time constraints. The cabin overheated on the fourth day, killing her long before any scheduled euthanasia could occur.

  The Gaither committee met with President Eisenhower the day after Sputnik 2 went into

• 5. Biological Data And The Death Of Laika

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  orbit to discuss urgent responses. Khrushchev boasted in speeches that their first satellite was no longer lonely in space travels. The mission sparked global debates about animal testing ethics and mistreatment of living creatures. The National Canine Defence League called for dog owners to observe a minute's silence each day Laika remained airborne. The Royal Society for the Prevention of Cruelty to Animals received protests even before Radio Moscow finished announcing the launch. Demonstrators gathered outside United Nations buildings in New York while others protested at Soviet embassies worldwide. Laboratory researchers in the U.S. offered some support until news of Laika's death spread globally.

  A cosmic ray detector transmitted data

• 6. Global Geopolitical Impact And Animal Rights Protests

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  for one week until its battery ran out on the 9th of November 1957. Particle flux increased from normal 18 pulses per second to 72 pulses at highest latitudes during orbital apogee. Sputnik 2 likely detected lower levels of what would become known as the Van Allen Radiation Belt. Soviet scientists could only receive telemetry when flying over their own territory, limiting data collection significantly. They asked Australian observers for additional data but refused to share decryption codes needed to use it. James Van Allen eventually mapped the radiation belts using Explorer 1 and Explorer 3 missions instead. Ultraviolet and X-ray photometers returned no usable data because they were oversaturated by orbital radiation exposure.