![The U.K.'s official government investigation of UFOs can be traced to a group formed in 1950: the Flying Saucer Working Party.](https://cdn.mos.cms.futurecdn.net/BkkE7SUqhdBQWGMRscuzkQ-320-80.jpg)
From the early 1950s until 2009, a department in the United Kingdom's Ministry of Defence (MoD) documented and investigated reports of UFOs. Now, more than a decade after the program ended, many of those formerly classified files about UFO sightings will be made available to the public for the first time.