NASA said Thursday it is launching a scientific study on unidentified aerial phenomena, more commonly known as UFOs, calling them of interest for both national security and air safety.The study will start early in the fall and is expected to take about nine months to complete, according to the National Aeronautics and Space Administration. There is no evidence that the phenomena are extra-terrestrial in origin, it said.The announcement comes as attention grows over mysterious flying objects, with the U.S. Congress having held in May the first hearing on unidentified aerial phenomena in arou…READ FULL ARTICLE