List of reported UFO sightings

The shapes reported as UFOs include orbs, triangles, other shapes, fireballs, discs, eggs, cigars, changing shapes, rectangles, and diamonds, from most to least common. Full data for the infographic is in the linked footnote.

This is a list of notable reported sightings of unidentified flying objects(UFOs) and related claims of close encounters or abductions. UFO’s are generally considered to include any perceived aerial phenomenon that cannot be immediately identified or explained. Upon investigation, most UFOs are identified as known objects or atmospheric phenomena, while a small number remain unexplained.

Antiquity

16th–17th centuries

19th century

20th century

1900–1949

1950–1974

1975–1999

21st century

  • Table of reports during the 1947 flying disc craze – A sortable table of the hundreds of 1947 flying disc sightings.
  • List of alleged extraterrestrial beings – A list of entities reported in conjunction with UFOs and believed by witnesses to be alien in origin, unrelated to astrobiology or xenobiology.
  • List of UFO religions
  • List of investigations of UFOs by governments
  • List of UFO organizations – Private organizations that investigate UFO sightings.
  • Extraterrestrial hypothesis – The proposal that UFO sightings are observations of physical craft piloted by biological aliens from another planet.
  • Interdimensional hypothesis – The proposal that UFO sightings are the result of experiences with another dimension.
  • Psychosocial hypothesis – The proposal that UFO sightings can be explained by social and psychological processes.
  • Time-traveler hypothesis – The proposal that UFO sightings can be interpreted as advanced humans traveling from the future.

Notes and references

    • NUFORC has collected over 100,000 UFO reports spanning decades. The most common description was of “lights” in the sky, and many UFOs were of an “unknown” or “unspecified” shape. Others included: cubes (16), cones (600), crosses (491), teardrops (1221), and stars (138).
    • Arranz, Adolfo (24 December 2017). “Are we alone?”. South China Morning Post. Infographics by Pablo Robles. Archivedfrom the original on 22 July 2023. Retrieved 22 July 2023.
    • “UFO Report Index by Shape of Craft”. National UFO Reporting Center. Archived from the original on 22 July 2023. Retrieved 22 July 2023.
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