List of X-15 flights
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X-15 Flight 90
List of spaceflight records
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X-15 Flight 91
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Joseph A. Walker
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1963 in aviation
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Sub-orbital spaceflight
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List of human spaceflights
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Gemini 8
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Ansari X Prize
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North American X-15
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List of astronauts by name
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Human spaceflight
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July 19
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Astronaut
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