London: A spaceship that was "20 times the size of a football field" was spotted hovering over Britain`s Manchester airport nearly 15 years back, says a secret defence ministry file that was released on Thursday.
The huge spacecraft was seen by a UFO expert in 1995 and its sketch was sent to the defence ministry, The Sun reported Thursday, citing the secret files.
The UFO was described as oblong with a curved front and a series of small nozzles at the rear.
That`s not the only UFO sighting.
A "cigar-shaped" object was seen over Lancashire in 1977 and a "strange, glowing object" was spotted near RAF Woodbridge, Suffolk, in 1980.
In 1998, a circular "space station" was seen in Gwent, South Wales.
"A proportion of sightings could not be explained," Nick Pope, who worked on the files, was quoted as saying.