LUBBOCK.

In the following weeks, additional formations of similar lights were observed by hundreds of Lubbock residents. On August 30, 1951, Carl Hart Jr., a freshman at Texas Tech, photographed five frames of a V-formation of approximately 18 lights. The Hart photographs became the most famous images of the case, were carried internationally, and were sent to USAF intelligence for analysis. Ruppelt's account in The Report on Unidentified Flying Objects describes the photographs as showing real, luminous objects whose nature could not be readily explained.

Project Blue Book head Edward Ruppelt personally investigated the case. After interviewing the Lubbock professors, Hart, and additional witnesses, Ruppelt initially listed the case as "unidentified." In subsequent years, he and other Air Force investigators eventually attributed the lights to a flock of plovers reflecting Lubbock's then-new mercury vapor street lights — but the professors, all of whom were experienced field scientists, rejected the explanation, noting that the objects had been silent, in a perfect V-formation, and apparently far too high and fast for a flock of birds.

The Lubbock Lights are historically significant because they involved highly credentialled witnesses, an early UFO photograph, and an iconic case in which Project Blue Book's eventual conventional explanation was openly disputed by the original witnesses. Some modern analysts have reopened the case in the context of subsequent Texas UFO waves; Hart's original photographs, while never proven a hoax, have been argued to be reproducible with simple photographic technique.