On March 13, 1997, thousands of witnesses in and around Phoenix, Arizona, caught a glimpse of bright, unidentified lights moving silently across the night sky.

Hangar 18 is said to be a classified facility at the Wright-Patterson Air Force Base in Ohio that only the highest government officials have access to.

On the night of December 29, 1980, Betty Cash, Vickie Landrum, and Vickie’s grandson Colby were driving through the woods near Dayton, Texas when they encountered a large, diamond-shaped object being pursued by a handful of military choppers.

A weekend road trip ends bizarrely for a New Hampshire couple after they return home with a two-hour gap in their memories.

Fragments of a map from the 1500s sparked a theory that’s been going strong for decades.

In June 1980, police officer Alan Godfrey investigated the strange death of Zigmund Adamski.

In December 1980, just outside of London, several members of the U.S. Air Force spotted an indescribable craft in the forest.

In 1973, fishing buddies Charlie Hickson and Calvin Parker turned up terrified at the Pascagoula, Mississippi Sheriff’s Station.

Navy pilots stationed in the Pacific Ocean saw something inexplicable in November 2004.

In 1994, an entire playground full of school children in Zimbabwe claimed they saw a UFO hovering overhead.

In 1967, Stefan Michalak went to Falcon Lake for a weekend prospecting trip, where he encountered what has become the best-documented UFO in Canadian history.

After UFO sightings exploded in New Hampshire in 1965, everyone from local police to Air Force officials to the Pentagon began investigating.