40 Millions UFO Signs have been recorded since 1947, when the first flying saucers were reported . The most common sighting are glowing balls of light moving quickly.There have been reports of crash landing by mysterious objects and of aliens abduction.in 1948 , the US Air Force set up an investigation into UFO .By 1969 when the project ended about 12000 incident has been recorded. A quarter were caused by natural phenomena or known objects but the rest remained unidentified.It has yet to be proved tat there are intelligent life forms elsewhere in space, or that they are visiting Earth. People who have been claimed to have been abducted by aliens often describe strange noise, flashing lights, and blackouts. Some say they were examined , losing air , finger nails, and developing strange marks on their skin. No other planet in our solar system can support life, so UFO must come from planet, orbiting another star like our sun.It would take thousands of year to reach ...