LONDON, England (CNN) -- Britain's Ministry of Defense has released files on UFO sightings dating back to the 1970s, including witness accounts and the government's response.
The ministry on Wednesday released the files as part of a four-year project to transfer all of the UFO documents to the National Archives to make them available to curious members of the public.
The documents include hundreds of police reports taken from witnesses who describe seeing lights or strange objects in the sky, from southern England and Wales up to Northern Ireland.
The files released Wednesday cover 1978 to 1987. The rest, dating from the 1950s and covering recent history, will be released over the coming years.
Reported sightings typically describe various shapes and colors of lights, moving in formation or hovering in the sky.
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