Canadian astronaut Bob Thirsk training for Expedition 20/21
![](/images/recherche//tiles/c209c902-0b0f-4fb0-98cc-49b780539199.jpg)
Canadian astronaut Bob Thirsk training for Expedition 20/21. (Credit: )
File size: 0.7 MB
Image size: 1800 x 1350 pixels
Resolution: 96 dpi
Photo taken on April 21, 2008
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