{"version":"1.0","type":"rich","provider_name":"Acast","provider_url":"https://acast.com","height":250,"width":700,"html":"<iframe src=\"https://embed.acast.com/$/69507dcfe30db7c5d8e0c562/6a6b334037bc2725029e86ab?\" frameBorder=\"0\" width=\"700\" height=\"250\"></iframe>","title":"Project blue book","thumbnail_width":200,"thumbnail_height":200,"thumbnail_url":"https://open-images.acast.com/shows/69507dcfe30db7c5d8e0c562/1785410070258-3411ffa5-8ece-4d8c-81f2-53cfbee5f3b6.jpeg?height=200","description":"<p><strong>Project Blue Book</strong> was the code name for the U.S. Air Force's systematic study of UFOs from March 1952 until its termination on December 17, 1969. The project followed earlier investigations of a similar nature, including <strong>Project Sign</strong>, established in 1947, and <strong>Project Grudge</strong>, launched in 1949. Project Blue Book had two primary objectives: to determine whether UFOs posed a threat to national security and to scientifically analyze UFO-related data.</p>","author_name":"Alternativ Historia "}