character: NASA
topic: NASA's Role in Space Travel Innovations
grade: 9
subject: Science
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character: Apollo Program
topic: Innovations in Human Spaceflight
grade: 9
subject: Science
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character: Space Shuttle
topic: Development of Reusable Launch Systems
grade: 9
subject: Science
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character: Mars Rover Missions
topic: Technological Advances in Planetary Exploration
grade: 9
subject: Science
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