Triangular UFO seen in Riverside 1952

Summary

In September 1952, a luminous object with a star-like shape was observed in Riverside, California. Witnesses reported an object with red, blue, and yellow colors moving erratically, slower than a typical meteor. The observation was made by four civilians without instruments, and the object was located about 30 degrees above the horizon. Although an astronomical phenomenon was considered, it was not identified with certainty. The report was distributed to several air intelligence units, highlighting the significance of the sighting at the time.