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 ...
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 ...