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The SR-71 was never the fastest plane in the world (http://en.wikipedia.org/wiki/North_American_X-15 http://en.wikipedia.org/wiki/North_American_X-15). It's th
by stephencanon 13y ago
The SR-71 was never the fastest plane in the world (http://en.wikipedia.org/wiki/North_American_X-15 http://en.wikipedia.org/wiki/North_American_X-15). It's the fastest "air-breathing" (i.e. not rocket-powered) plane.