🇺🇸 USAF — Project Blue Book
In July 1955, a group of observers in Shelby, Iowa, spotted a luminous object that appeared stationary in the sky. The object, described as the size of a quarter penny at arm's length, displayed red, white, and green colors along with flashing lights. Despite photographs being taken, a pilot flying over the area reported seeing nothing. The official investigation concluded there was insufficient information to determine the object's nature, though possibilities like balloons or astronomical phenomena were considered. The lack of movement and the description of colors and flashes generated controversy and uncertainty.
The duration of the sighting and the witnesses' descriptions led to a more in-depth investigation. Research agencies were contacted and conventional explanations like balloons or aerial lights were reviewed, but no clear answer was found. The photographs did not reveal useful details, and the observers used binoculars without success. Although it was suggested the sighting could have been caused by an airplane or helicopter, the lack of movement for over two hours made this explanation difficult. Ultimately, it was considered that the sighting might have been caused by a balloon, though this was not confirmed.