ufos

"Project Blue Book," the hit television docudrama about the U.S. military's investigations into aliens more than 50 years ago, is back for Season 2.

A search for the truth behind UFO sightings leads to the discovery of government cover-ups.

The great distances covered by visiting "aliens" may be ones of time rather than space, a recent book argues.

A private company that researches UFOs has a new contract with the U.S. government.

Chilean officials are investigating a curious collection of burning objects that fell onto parts of the country last week.

Presidential candidate Bernie Sanders (D-VT) says he's prepared to disclose government information about UFOs if he wins in 2020.

The former leader of the U.S. government's top-secret UFO program has stories to tell, and he is sharing some of them for the first time in a new documentary.

Between 2014 and 2015, seasoned pilots in the U.S. Navy experienced a number of harrowing encounters with UFOs during training missions in the U.S.

New rules encourage U.S. Navy pilots and sailors to report UFO sightings. Here's why.

The U.S. Navy plans to set up an official reporting and investigative system that will monitor reports from its pilots about UFOs.