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  1. List of alleged extraterrestrial beings - Wikipedia

    This is a list of alleged extraterrestrial beings that have been reported in close encounters, claimed or speculated to be associated with unidentified flying objects (UFOs) (not to be confused with the …

  2. UFO and UAP Shapes and Sizes – Unidentified Phenomena

    Feb 10, 2023 · Civilian and military databases consistently show clustering around a core set of forms, with a long tail of rare or exotic shapes reported far less frequently. The descriptions below reflect …

  3. Classification Systems - Center for UFO Studies

    It has been broadened to include UFOs that appear as an object, with lights or without, appearing in either day or night, that is unconventional in appearance and/or behavior.

  4. The Varied Shapes of UFOs: A Review of Reported Phenomena

    Oct 1, 2024 · This article reviews the different types of UFO shapes that have been reported over the years, examining their characteristics, historical significance, and the cultural impact of these sightings.

  5. The What's What of UFOs: - James M Deem

    You may picture flying saucers when you think of UFOs, but there are many different sizes and shapes of True UFOs (TRUFOs). Here are the five main shapes that have been spotted over the years.

  6. Unidentified Flying Objects: What We Know | Britannica

    UFO sightings have various possible explanations, ranging from natural phenomena to psychological effects. Many sightings result from misinterpreting bright lights, such as the planet Venus, or optical …

  7. Skywatcher's Revolutionary UAP Classification System: Unveiling the 9 ...

    Apr 8, 2025 · This article delves into Skywatcher’s revolutionary UAP classification system, exploring the nine distinct types of unidentified aerial phenomena they have identified, their detection methods, …

  8. UFO Classification | HowStuffWorks

    Some UFOlogists, as they're called, use sub-classifications within each kind. These subtypes further classify encounter by factors such as where the creature was seen (inside or outside the UFO) and …

  9. Unidentified Flying Object (UFO) - New World Encyclopedia

    Although there are hundreds of different types of Unidentified Flying Objects or UFOs observed all over the world, a majority of the sightings can be grouped into five common categories:

  10. Types of UFOs - Center for UFO Studies

    Types of UFOs. Classification Systems. Nocturnal Lights. Daylight Discs. Triangular UFOs. Radar and Radar-Visual. Close Encounters of the First Kind. Close Encounters of the Second Kind. Close …