Date of sighting: March 2011
Location of sighting: Norfolk, UK
The mystery object was captured by a local photographer - putting a fresh spin on old saying "Normal for Norfolk".
Stunned Peter Rye, 57, only realised it was on his images of Downham Market's Denver mill - taken for a calendar - when he checked them later.
Peter, of King's Lynn, said: "From the photos it moved across the sky from right to left."
UFO expert Nick Pope said: "It's an interesting image."
☯ Scott C. Waring wrote novels “Dragons of Asgard” & “UFO Sightings of 2006-2009” at online bookstores, or visit my UFO Video channel TaiwanSCW. Please follow me on Twitter, I'm @SCWbooks ☯