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See the title. ICBMs travel at many times the speed of sound through space. We've had them for over half a century.

In fact, they are faster than the "hypersonic missiles" you read about constantly in the news.

Hypersonic missiles are nothing but hype.

See the title. ICBMs travel at many times the speed of sound through space. We've had them for over half a century. In fact, they are faster than the "hypersonic missiles" you read about constantly in the news. Hypersonic missiles are nothing but hype.

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[–] [deleted] • 1 pt (edited )

They also are hypersonic at a much lower altitude which means the detection range of a ground based radar system is limited to the horizon. If the horizon obscures the missile at it's cruise altitude 500 miles out it means by the time you know it's coming you only have a few seconds to do anything about it.

[–] • 1 pt

ICBM's travel at 4.3 miles per second when they reenter and have had evasive reentry for forty years.