TiMELiNES
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TiMELiNES
October 1967
X-15 sets lasting speed record
William J. Knight flew the X-15 at Mach 6.7, a major milestone in crewed hypersonic flight.
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Everything has a timeline
October 1967
William J. Knight flew the X-15 at Mach 6.7, a major milestone in crewed hypersonic flight.
Context
Authority
Taxonomy