Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. In October 2009, Colorado ...

Pentagon and FBI files released about unidentified flying objects have colorful accounts from witnesses describing what they saw.

Meet the VZ-9AV Avrocar: Is the alien spacecraft that crashed in Roswell, New Mexico, back in July 1947 now in the collection of the National Museum of the United States Air... Here’s What to Remember ...

What exactly was in the air that summer? Reports of “flying saucers” -- a new term -- flooded into police stations and newspapers all over the U.S., including in the Upper Midwest. In the summer of ...