Sixteen years after a group of mysterious lights were spotted by thousands throughout the Valley, theories still swirl about what was overhead.

It was late afternoon on February 10, 2013, as two men stood in a parking area not far from Millsboro in Washington County

Academy Award-winning actor Russell Crowe shocked a lot of people this week when he Tweeted that he had captured a UFO on camera.

After almost 40 years of investigating the shrouded history of UFOs throughout North America, Grant Cameron is getting some recognition.

Tracking unidentified flying objects now seems to hold little interest for the Canadian government

Between February 21 and February 27 many people reported seeing bright orange lights and flames in the sky.

The truth really is out there … according to Russell Crowe.

Some people believed they were witnessing a plummeting plane, a military attack, or a UFO

Nearly every day, videos, photos and eyewitness accounts of UFOs pop up on the Internet.

A startling new video clip showing what appears to be an elongated skull lying on the ocean floor

The U.S. Military's flying saucer never came to fruition, but the physics that could have made it possible are used today in airplanes, missiles, and spacecraft.

An unidentified flying object hovers over the Palace of the Parliament in Bucharest.

Numerous social media web sites have reported about strange bird-like UFOs captured on camera in Mexico.

A special effects expert has explained how he faked footage of a UFO which has fooled alien hunters on YouTube since last year.