🇺🇸 USAF — Project Blue Book
In February 1960, a witness in Marlboro, New Jersey, spotted a round object with a greenish hue and a red tail. The object, about the size of a large streetlight, was moving slowly westward. Although the sighting was recorded, there were no photos or additional data to help identify the phenomenon.
The official report concluded that there was not enough information to evaluate the object's nature. A balloon was ruled out due to wind direction, but no conventional explanations like aircraft or astronomical events were found either. This case remains an unsolved mystery in the UFO archives.