Why is rocket science considered so hard?
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# Spaceflight
What is the significance of rockets?
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Did SpaceX actually catch the rocket?
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What is the name of rocket science?
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What do they mean by rocket science?
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Why do people say rocket science is hard?
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Why do astronauts have to be carried after landing?
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What is the fancy name for rocket science?
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Who is the real inventor of rocket?
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