If you're a skeptic, these UFO sightings will convince you that the truth is out there—and it may not be from Earth.

Trump administration science advisors are offering conventional explanations for some of the sightings of mysterious orbs of ...

"This is a detective story that can be resolved with better data," Harvard astrophysicist Avi Loeb told Newsweek.

NASA's relationship with UFOs has evolved alongside broader changes in public and government interest in unexplained sightings.

National attention on UFOs has shifted in recent years, especially after the US government in the past decade has released reports about them.

Sean Stone says the U.S. government reverse-engineered craft in the Roswell crash.

Michael Sheen is set to star in a Welsh comedy film about a UFO sighting - after sharing his own encounter with "a phalanx of ...