Canadian astronaut Bob Thirsk training for Expedition 20/21
![](/images/recherche//tiles/422a4f0e-8748-4167-a0b7-e31ea70ae5c4.jpg)
Canadian astronaut Bob Thirsk training for Expedition 20/21. (Credit: )
File size: 0.71 MB
Image size: 1800 x 1350 pixels
Resolution: 96 dpi
Photo taken on April 21, 2008
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