text: COWLEY COUNTY, Kansas - Residents in Cowley County are still talking about a mystery craft, seen being towed down US 77 Monday.
  Sitting inside Lindly's Appliance Store, Kammi Root is used to seeing large machinery towed down US 77. But what she saw Monday afternoon is something she won't soon forget...... http://www.ksn.com/news/local/story/It-s-a-bird-It-s-a-plane-It-s-a-UFO/Gdz5Dk85VkKZ2T9jLXwYHQ.cspx
  
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  "This is 4 times bigger than anything America has ever exploded." Soviet scientists built a 3-staged thermonuclear device, based on the Ulam-Teller design. This bomb, nick-named "Emperor Bomb", was 58 megatons. The explosion equalled to 58 million tonnes of TNT. The original was 100 megatons, but they scaled it down to prevent pollution. PLUS: incredible SLOW-MOTIONS of the HUGE explosions! AWESOME!!!
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  Tsar Bomba, nicknamed 'Big Ivan' by its makers, was the largest nuclear bomb ever built. With a yield of 50 megatons, it was 4000 times more powerful then the bomb that devastated Hiroshima.
  This video shows various important aspects of the bomb, including its development at Arzamas-16, the secret Soviet nuclear weapons research facility and its transportation to the Tu-95 bomber, which was painted white for the test to reflect the heat of the blast. Several different views of the explosion are also shown, including several filmed from the air and ground alike. The last few shots are of the ground zero several days after the test.
  Video source: www.atomicforum.org
  
  Tsar Bomba (Russian: Ð¦Ð°Ñ€ÑŒ-Ð±Ð¾Ð¼Ð±Ð°), literally "Tsar-bomb," is the nickname for the RDS-220 hydrogen bomb (codenamed "Ivan" by its developers)â€”the largest, most powerful nuclear weapon ever detonated.
  Developed by the Soviet Union, the bomb was originally designed to have a yield of about 100 megatons of TNT; however, the bomb was reduced by half in order to limit the amount of nuclear fallout that would result. One bomb was built and tested on October 30, 1961, in the Novaya Zemlya archipelago. The weapon never entered service.
  A mock bomb was stored in the Russian Nuclear Weapons Museum in Sarov.
  Narrator : William Shatner