ufo

NASA chief Bill Nelson told CNN that he has asked agency researchers to look into the spate of UFO sightings that U.S. Navy pilots have reported over the past two decades.

U.S. lawmakers called for an official assessment of UFO sightings in December, and the six-month deadline is up.

A film frame allegedly showing the autopsy of an extraterrestrial that crash-landed in Roswell, New Mexico has an opening bid of $1 million.

We could soon start getting answers to some vexing UFO questions.

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.

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.

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.

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.