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Astronauts and cosmonauts
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Space travel, exploration and defense
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NASA Just Announced More Strange Results From Its Ambitious 'Twin Study'
https://www.sciencealert.com/nasa-just-announced-more-strange-results-from-its-ambitious-twin-study
Astronauts and cosmonauts
r/spaceporn - "Where is Bob ?" Picture by NASA [1080x1080]
https://www.reddit.com/r/spaceporn/comments/ad9cmo/where_is_bob_picture_by_nasa_1080x1080/
Astronauts and cosmonauts