November 3, 1957 – Sputnik 2 Sends First Living Animal into Orbit

Monument to Laika, Moscow

Monument to Laika, Moscow

On November 3, 1957, the Soviet Union successfully launched their second Sputnik earth satellite from an ICBM R-7 platform.  The 13 foot high, 2 foot diameter capsule contained compartments for radio transmitters, a telemetry system, a programming unit, regeneration and temperature control systems, scientific instruments (including photometers to measure ultraviolet and x-ray solar radiation), and in her own separate padded and pressurized cabin, a part-terrier, part-Samoyed female dog named Laika.  Other than hitchhiker microbes, no living animal had ever blasted off into space before little 13-pound Laika (which meant “Barker” in Russian) went up, fitted with a harness, electrodes to monitor her condition, and supplies of oxygen, food, and water.

With Sputnik 1 still orbiting Earth, transmitting radio signals and ICBM nightmares across the globe, Sputnik 2’s successful launch introduced an even greater level of perceived alarm and threat by Cold War antagonists to the USSR’s new space supremacy.  Sputnik 2 did not carry out its mission entirely as planned, however.  While the satellite-bearing rocket achieved earth orbit, where it successfully jettisoned its nose cone, a portion of the rocket called “Blok A” did not separate, inhibiting the thermal control system.  Vital thermal insulation was torn loose during the nose cone separation as well, and Sputnik’s internal temperatures soon reached 104°F.

Sputnik 2’s fate to burn up in earth atmosphere reentry occurred on April 14, 1958, after 162 days of circling the globe.  The original plan for Laika – painful for all animal-lovers everywhere to contemplate – was for her to provide information for a limited period of time on the effects of space flight on living beings, through monitoring her vital signs.  After ten days, she was to be euthanized by lethal medication-supplemented food.  Once sent into orbit, she could never return.  But after the early loss of her capsule’s thermal insulation, Laika was only able to survive for a few hours before succumbing to the heat and stress.  Her death was a small, but significant tragedy on the road to man’s Race to Space.

Sputnik 2 Module

Sputnik 2 Module. Photo: Raumfahrer.net

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