Six engines, Mach 3 speed, nuclear capability—the XB-70 Valkyrie was meant to dominate the skies. But it became one of the Cold War’s biggest "what ifs." This is its story.

XB-70 Valkyrie, Explained The Cold War was a romantic time for aerospace design. Nations were experimenting widely, investing heavily in novel ideas, pushing the boundaries of what was possible ...

The XB-70 Valkyrie could cruise at Mach 3, riding its own shock wave to do so, and could hit altitudes of 70,000 feet. But the XB-70 Valkyrie never went into full-scale production ...

Here’s What You Need to Remember: Only two of the enormous XB-70 bombers were ever built; one resides in a museum in Ohio, the other was destroyed in a collision in ...

A unique bomber-style fighter jet, the North American XB-70 Valkyrie has a top speed of around 2,050 mph, which is about Mach 3, depending on the altitude. This experimental fighter never ...