Project Blue Book Case #1335. On June 23, 1952, a bright object was observed in the sky near Owensboro, Kentucky — a Ohio River city in the western part of the state. The object's luminosity and movement pattern were inconsistent with any conventional aircraft or natural phenomenon known to the witnesses.
Owensboro's position on the Ohio River placed it roughly equidistant between Evansville, Indiana, and Louisville, Kentucky, in a region of agricultural flatlands with wide-open horizons. The area's distance from major military installations meant limited military air traffic, though commercial routes between the Midwest and the southeastern United States passed overhead.
The June 23, 1952, date is notable because it is the same date as the Oak Ridge, Tennessee, sighting (Case #1334), approximately 300 miles to the southeast. While there is no evidence directly linking the two cases, simultaneous unknowns in the same region of the country contributed to the pattern of accelerating activity that characterized June 1952.
The object near Owensboro was described as bright and moving in a controlled manner, distinguishing it from meteors, aircraft navigation lights, and celestial objects. The steady quality of the light and the object's sustained presence ruled out brief transient phenomena.
Blue Book investigators checked flight records for the region and found no aircraft that could account for the sighting. Weather data did not support atmospheric optical effects. The case was classified "Unknown" — another contribution to the mounting wave that would peak spectacularly the following month.