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Why Russia's Hypersonic Missiles Can't Be Seen on Radar
[Military] The missile flies with an advanced fuel that the Russians say gives it a range of up to 1,000 kilometers. And it's so fast that the air pressure in front of the weapon forms a plasma cloud as it moves, absorbing radio waves and making it practically invisible to active radar systems.



I became curious by looking at another source saying that hypersonics "cannot" be detected by radar. Found this article in attempting to verify. Looks (practically) legit.
Posted by: Anomalous Sources 2022-11-03
http://www.rantburg.com/poparticle.php?ID=648457