At the Gagarin Cosmonaut Training Center in Star City, Russia, Expedition 57 backup crewmember David Saint-Jacques of the Canadian Space Agency (front row, left) signs a ceremonial book Sept. 17 as part of prelaunch activities. Looking on is his crewmate,
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| License | CC BY-NC-ND 2.0 |
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| Date taken | 2018-09-17 12:07:00 |
| Date uploaded | 2018-09-18 |
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