Video released for the first time shows the UFO which appeared in the sky around 3am on January 3, 2012 in Denbigh, North Wales.
Brothers Nathan and Alex Thomas saw several lights rotating in a circular formation out of the window of their home.
Nathan, then aged 14, was watching TV when he heard a loud bang from a bin being knocked over in a storm so decided to investigate.
After watching them or some time he decided to wake his brother Alex, who described the lights as "amazing".
They couldn't hear any noise from the lights and so decided it could not be fireworks.
Nathan grabbed his Toshiba Camilo S30 hand-held camera which he'd got for Christmas and filmed the lights from his bedroom window.
To his bemusement, he saw the bright lights flashing in the distance over a farmer's field.