Unidentified Aerial Phenomena: Morphologies, Five Core Observables, and Hynek–Vallée Classifications

To the point

Unidentified anomalous phenomena span many shapes and extraordinary flight behaviors, are analyzed with Hynek’s proximity-based and Vallée’s morphology-based classifications to separate genuine mysteries from misidentifications, and continue to fuel debate through cases like Kenneth Arnold’s disc, the O’Hare sighting, and the Nimitz Tic-Tac encounter, with ongoing oversight by AARO and ODNI.

From Tic-Tacs to Triangles: A Complete Guide to UAP Shapes and Types - New Space Economy
newspaceeconomy.ca

From Tic-Tacs to Triangles: A Complete Guide to UAP Shapes and Types - New Space Economy

For as long as humans have looked to the skies, they have witnessed things they could not explain. Ancient Roman historians recorded accounts of phantom ships gleaming in the heavens. Medieval chronicles and Renaissance art contain depictions of strange objects accompanying celestial or religious events. This long history of skygazing forms the backdrop for a modern phenomenon that captured the public imagination in the mid-20th century and continues to challenge scientific and military understanding today: the Unidentified Anomalous Phenomenon, or UAP.