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70-year-old NASA astronaut Don Pettit's hobbies on the ISS? Photography and 'science of opportunity'
NASA astronaut Don Pettit, an energetic tinkerer and photographer, used his off-duty time on the International Space Station ...
The LSST camera at the Vera C. Rubin Observatory has released its jaw-dropping first images, each capturing 45 times the area ...
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