At 3.44 pm on August 19, 1960, a spaceship carrying two dogs, Belka and Strelka, was launched from the Baikonur space center. Scientists planned to study the impact of cosmic radiation on living beings and check the efficiency of life support systems such as the food and water supply.
The dogs spent over 25 hours in space while the spaceship made 17 complete revolutions around the Earth.
The spacecraft with animals on board made a successful landing in the designated area on August 20, 1960. The experiment provided groundbreaking data about the effects of spaceflight on living beings’ physiological, genetic and cytological systems.