ufo

If you are perplexed by reports of unidentified aerial phenomena and possible visitations of alien spacecraft, you can take action with do-it-yourself sky-monitoring gear.

The CIA just turned over 2,700 pages of UFO-related material to The Black Vault, a free repository of UFO records online.

Multiple people saw a strange blue light whiz over Oahu, Hawaii.

If intelligent aliens visit the Earth, it would be one of the most profound events in human history.

Lenticular clouds look like saucers and form when wind meets mountains. This photo is one of the Royal Meteorological Society's favorites of the year.

The Pentagon just announced the creation of a task force to analyze and understand the "nature and origins" of UFOs. Here's what the much-hyped news means.

A federal program for investigating UFOs was purportedly discontinued in 2012, but the Pentagon's search for UFOs never stopped. Its findings may soon be released to the public.

How much would a report like this really tell us?

The U.K.'s Ministry of Defense announced that it will soon release formerly classified government files about UFO encounters.

The US Navy confirmed they have secret, classified documents regarding a 2004 UFO encounter, but releasing them could 'gravely damage' national security.