Key Points and Summary - The X-15 was a rocket-powered research aircraft that pushed human flight to the edge of space and deep into the hypersonic regime. -Air-launched from a B-52, three X-15s flew ...
Click to open image viewer. [NASM2006-12828] 70mm glass-mounted slides from the collection North American X-15 Glass-Mounted Color Transparencies (NASA), NASM.2006.0050. Photo by Mark Avino. CC0 Usage ...
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