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  Know about SR-72 spy plane that can traverse a continent in less than an hour

  World | October 27, 2014 10:05 IST

  New Delhi: SR-72 blackbird is a spy plane that can cross a continent in less than an hour.The unmanned, hypersonic aircraft is being designed by American aerospace company Lockheed Martin.With a mach speed of 6,

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  Iran Shot Down Unmanned US Spy Plane

  World | July 20, 2011 17:25 IST

  Tehran, Iran, Jul 20: Iran's Revolutionary Guard shot down an unmanned U.S. spy plane that was trying to gather information on an underground uranium enrichment site, a state-owned news site said Wednesday.Lawmaker Ali Aghazadeh Dafsari