character: NASA Astronauts
topic: Effects of Microgravity on Human Physiology
grade: 9
subject: Science
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character: International Space Station (ISS)
topic: Microgravity Research and Its Impact on Human Health
grade: 9
subject: Science
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character: Scientists
topic: Studying Bone Density Loss in Space
grade: 9
subject: Science
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character: Physicians
topic: Countermeasures for Microgravity-Induced Muscle Atrophy
grade: 9
subject: Science
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