Hypersonic weapons are frequently described as having unique, game-changing capabilities because they combine hypersonic speeds (more than five times the speed of sound, or Mach 5) with long-distance gliding at low altitudes (below about 50 kilometers). This has led, for example, to dire warnings that US ships would be “defenseless” against hypersonic attack.
This article was written by David Wright and originally published by The Bulletin Of The Atomic Scientists.
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