Abstract: This article is dedicated to the examination of application of the research on aging, particularly, in the area of geriatric psychology for resolution of the tasks that space psychology is faced with. This refers to legitimate distribution of the results of analysis of psychosocial aspects of people in retirement homes in the areas, associated with examination of astronauts’ behavior that are placed in the confinement of spacecraft during a long-duration flight. Special attention is given to determination of similarity between the stressogenic factors and psychological responses of both groups. The work demonstrates that despite the formal differences between the groups, the psychosocial aspects of existence in confined environment of the older people and astronauts (specificities of the surrounding environment, stress factors, types of psychological responses, methods of reducing the stressogenic influence of the environment, building up resistance to stress, etc.), are considerably similar. The results acquired in the area of geriatric psychology and sociology can play an important role in forecasting space behavior, due to the fact that it allows identifying the yet uncounted psychological risks, which mostly likely will emerge with the increasing endurance of spaceflights, as well as suggest practical preventative measures.