Five decades on, true believers and skeptics continue to debate what occurred in the Apache-Sitgreaves National Forest in central Arizona on Nov. 5, 1975.

New Hampshire is famous for two incidents in the 1960s involving UFOs. One is known as The Exeter Incident, when a hitchhiker and other witnesses say they saw a large flashing object in the sky.

Are you worried about being abducted by aliens? Many people worldwide have claimed to have been abducted by aliens, been taken against their will to an alien spacecraft or enclosed place, questioned ...