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Retired Astronaut Scott Kelly Reflects on Year-Long ISS Mission
496
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8 years ago
NASA Astronaut Scott Kelly Reflects on His Year in Space
588
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9 years ago
‘The Martian’ Director Ridley Scott Discusses NASA?s Journey to Mars
642
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9 years ago
Magnetic Levitating Top via Lenz’s Law – Demonstration & Explanation
719
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15 years ago