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          Explanations for UFO sightings
          

          China Daily | Updated:  2008-10-21 07:49
 



          



          

          Here are 10 possible explanations for UFO sightings.
          


          1) Weather balloons - Gas-filled balloons that measure conditions in the upper atmosphere to help forecasters.
          


          2) Clouds - Saucer-shaped or "lenticular" clouds that form at high altitudes have been confused with UFOs.
          


          

          Explanations for UFO sightings
          

          

          


          


          


          
 
 



          


          

          



          


          

          

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