Canadian astronaut Bob Thirsk
![](/images/recherche//tiles/f8ef6b8c-d9d9-4ddc-a5e7-7754b7fcc681.jpg)
Canadian astronaut Bob Thirsk exercises on the CEVIS (Cycle Ergometer with Vibration Isolation System) onboard the International Space Station. (Credit: NASA)
File size: 1.29 MB
Image size: 1200 x 1807 pixels
Resolution: 300 dpi
Photo taken on June 3, 2009
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