Which space agency primarily uses the designation Cosmonaut rooted in the Soviet space program?
Answer
Roscosmos/Soviet Programs
The designation Cosmonaut is inextricably linked to the historical lineage of the Soviet space program and its successor, Roscosmos. When an individual undergoes training and flies under the purview of the Russian space agency, they are designated a cosmonaut, even when participating in modern international missions. This adherence to title serves as a continuous marker of national affiliation within spaceflight documentation. Functionally, the duties performed—operating systems, conducting experiments, navigation—are identical to those of an astronaut, but the linguistic convention maintains the geopolitical distinction rooted in the original space race history.

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