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May 30, 2010 — This is interesting. Air traffic control radar in Yakutsk, Sakha (Yakutia) Republic, Russia is tracking a UFO. Radar system gives it speed of 9800 km/h and altitude of 19780 meters. Object is also changing direction instantly. Nice detail I noted is that, as the object has not sent any ident signal to the secondary surveillance radar, or SSR, the system has tagged the object with default number 00000. They are here! Authorship of the video is unknown.
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Boeing created the X-43A, which was designed to operate at speeds greater than Mach 7, about 5,400 mph at altitudes of 100,000 feet or more using a scramjet engine.