character: Falcon 9
topic: SpaceX Falcon 9 and its reusability in spaceflight
grade: 9
subject: Science
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character: Elon Musk
topic: Vision behind SpaceX and advancements in reusable rockets
grade: 9
subject: Science
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character: NASA
topic: Collaboration with SpaceX on reusability technologies
grade: 9
subject: Science
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character: International Space Station (ISS)
topic: Use of Falcon 9 for resupply missions and implications of reusability
grade: 9
subject: Science
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