* International Space Station: The official language is English, but astronauts from various countries communicate in their native languages as well, especially in informal settings.
* Historical Missions: During the early days of space exploration, the Soviet Union used Russian as the primary language.
* Future Missions: As space exploration expands, the use of other languages may become more common.
It's important to note that astronauts are required to have a high level of English proficiency for communication and safety reasons.