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Going Hypersonic: A Look at the Record-setting X-15

An important part of data collection for the United States space program, the North American X-15 had astonishing performance ...
Morning Overview on MSN

Inside the record X-15 that took hypersonic to new heights

The North American X-15 did more than set records; it quietly redrew the map of what a piloted aircraft could survive at the edge of space. By pushing hypersonic flight to extremes that still stand ...
The National Interest

The X-15 was a Starfighter in All But Name

The X-15 was a key bridge between conventional atmospheric flight and spaceflight. The North American X-15 is one of the most groundbreaking aircraft ever created in the history of aviation and space ...
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This Is NASA's Fastest Aircraft Ever

The fastest air-breathing vehicle ever built was the NASA X-43. Only three of these aircraft were built, with one being destroyed and two operating successfully. The X-43 testbed aircraft measured 12 ...