On March 13, 1997, the people of Phoenix, Arizona, experienced something that changed many people’s perceptions of the world around them forever. The Phoenix Lights hovered over the city almost 20 years ago, and the phenomenon has yet to be fully explained.

Starting around 7:30 p.m., reports began flooding into police stations and news agencies of mysterious lights appearing in the sky about 300 miles from the Nevada state line through Phoenix, and all the way to the edge of Tucson.

Starting around 7:30 p.m., reports began flooding into police stations and news agencies of mysterious lights appearing in the sky about 300 miles from the Nevada state line through Phoenix, and all the way to the edge of Tucson.