UFO Files was an American documentary television series that was produced from 2004 to 2007 for The History Channel. The program covered the phenomena of unidentified flying and submerged objects, close encounters with alleged extraterrestrial life, and alleged military and government cover-up conspiracies.

In 2008, a spin-off series called UFO Hunters premiered on the same channel.

Some of the scientists and experts that have been interviewed in the series are:

• William J. Birnes - author, publisher, and ufologist
• Paul Davids - television, science fiction writer and director
• Frank Drake - astrophysicist
• Stanton T. Friedman - ufologist
• Steven M. Greer - physician and ufologist
• Michio Kaku - theoretical physicist and futurist
• George Knapp - paranormal journalist
• Lawrence M. Krauss - physicist
• Geoffrey A. Landis - MIT professor, scientist and science fiction writer
• Bruce Maccabee - optical physicist and ufologist
• Seth Shostak - physicist and astronomer

For further information, visit Wikipedia.