From the jagged stealth of the F-117 to the blistering speed of the MiG-25, these 17 aircraft waged a high-altitude shadow ...

A videographer said he spotted an unusual UFO over the notorious Area 51 military base - the alleged flying object was dubbed ...

UFO researchers have been left puzzled after an oddly-shaped UFO was spotted whizzing above the mysterious Area 51 base in ...

In military aviation, raw speed is no longer a benchmark for domination over the ...

During the Cold War, American pilots occasionally encountered something they never expected to see over U.S. training ranges, ...

Quesst is the result of a joint venture between Lockheed Martin and NASA to build a supersonic aircraft that can fly over ...

Decades after the skyjacker’s daring heist, fresh clues deepen the intrigue surrounding the unsolved case.