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

Check out 5 MORE mysterious UFO sightings that just can’t be explained, in this The Proof Is Out There compilation.

Ufology Research, an organization Rutkowski belongs to, has collected and analyzed Canadian UFO report data since 1989. Their ...

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.

He estimates hundreds of incidents occur annually that baffle military leaders.

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

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