Summary of experiments onboard Soviet biosatellites

Area of Science:

• Space biology and physiology
• Gravitational biology
• Mammalian physiology

Background:

• Biosatellite missions, such as the Cosmos series, have investigated the physiological, morphological, and biochemical effects of space flight on mammals.
• Previous research indicates significant alterations in multiple organ systems due to microgravity exposure.

Purpose of the Study:

• To analyze the comprehensive effects of space flight on mammalian physiological systems.
• To evaluate the impact of artificial gravity on space flight-induced changes.
• To assess the interaction between weightlessness and ionizing radiation on mammalian health and recovery.

Main Methods:

• Physiological, morphological, and biochemical analyses of mammals exposed to space flight conditions.
• Experimental manipulation using artificial gravity (1 g) to counteract weightlessness.
• Studies combining simulated weightlessness with ionizing radiation exposure.

Main Results:

• Space flight induced moderate stress reactions, vestibular disturbances, and altered fluid-electrolyte metabolism.
• Artificial gravity reduced cardiovascular, musculoskeletal, and excretory changes but negatively affected vestibular function.
• Weightlessness did not significantly modify radiation damage or postradiation recovery.

Conclusions:

• Consistent physiological changes in mammals during space flight underscore the importance of biosatellite research.
• Understanding gravity's effects on life processes is crucial for space exploration and general biology.
• Biosatellite studies provide valuable insights into adaptation and countermeasures for space environments.