Short for "Unidentified Flying Object". Stereotypical depiction of an [[alien]] [[spacecraft]] originated from various description of the supposed spotting of alien spacecraft during the 1950 - 1970s "UFO craze" around the Americas.

The most common depiction of UFO are a "[[flying saucer]]", a disc-shaped spacecraft often with a glass canopy for its occupant. Though other types such as a sphere and a cigar-shaped UFO is also often depicted.

h4.See also

* [[Flying saucer]]
* [[Tractor beam]]
* [[UFO Day]]
UFO