A reportable UFO sighting may include:

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• Objects performing non-ballistic movement

• Rapid acceleration without visible propulsion

• Silent hovering craft

• Structured objects lacking wings or rotors

• Multiple coordinated luminous spheres

• High-altitude objects inconsistent with aircraft patterns​
   

Not all unusual sightings are extraterrestrial. Many reports ultimately resolve to conventional explanations. However, accurate documentation is critical to distinguish between known and unknown phenomena.