Expedition 56 prime crew member Alexander Gerst of the European Space Agency signs a ceremonial book
| Uploaded by | NASA Johnson |
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| License | CC BY-NC-ND 2.0 |
| Comments | 0 |
| Favorites | 2 |
| Views | 6,982 |
| Date taken | 2018-05-14 12:17:51 |
| Date uploaded | 2018-05-15 |
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| Visibility | public |