A new batch of declassified documents includes witness accounts, videos and reports of unexplained spherical objects observed across parts of the United States

Newly released US Department of Defense files on unidentified aerial phenomena revive decades-old sightings over the Aegean, blending military mystery with Greece’s long UFO folklore tradition

Previously undisclosed military footage and reports describe "unidentified aerial phenomena" observed near and over Greece by American personnel

Citing strong public interest, the president says federal agencies will begin disclosing files on aliens and unidentified flying objects amid renewed debate over past remarks by Barack Obama