many people see strange things in the sky and think they 1 _ be ufos. it's certainly difficult 2 _ what happened to a young australian pilot in 1978. at 6.19pm on 21 october, 20-year-old frederick valentich took off in a cessna 182 from melbourne. he _3 to fly over the sea to king island, between australia and the island of tasmania. australia bass strait king island tasmania At 7.06pm, valentich contacted steve robey at air traffic control in melbourne, because he _4 see a large aircraft _5 over him. robey was very surprised - he knew there _ 6 _ be any other aircraft in the area. but the small cessna wasn't alone. valentich watched the ufo flying above _7. the object was long and very fast with a green light. it _ 8 _ like metal, but it wasn't a plane. then it disappeared from the sky. at 7.11pm, when valentich was still 30 minutes from land, he reported engine problems. 'i'm going _9 to reach king island,' he told robey. suddenly he shouted 'i _10 see that strange thing above me again, and it's not an aircraft!' robey _11_ a strange noise over the radio, and then there was silence. the cessna 182 never reached king island; the plane and pilot completely disappeared. we _12 probably never know what happened to frederick valentich.