A hoax 'alien invasion' alert in Brazil caused panic and amusement, revealing vulnerabilities in emergency systems.

When strange objects appeared in the sky, many believed an alien invasion had begun. Radar signals, military responses, and ...

The Pentagon has released another batch of ‘UFO Files’ with footage of unknown objects in the sky—here are the most common alien theories, explained. This voice experience is generated by AI. Learn ...

Given the unique importance of a potential UFO visit, confirmation requires a high standard of evidence. Here are simple tips ...

New claims that the United States has recovered remains of four separate species of alien life are sending shockwaves throughout the UFO disclosure movement, further drumming up conversations ...

Astrophysicist Neil deGrasse Tyson speaks with CNN’s Dana Bash about "never-before-seen files" on UFOs released by the FBI and the Pentagon last week. "Given the testimonies we have heard delivered in ...

The great director Steven Spielberg has long been fascinated by UFOs. His alien films include E.T., Close Encounters of the Third Kind and the new Disclosure Day.

Another batch of “UFO Files” have been dropped by the Pentagon, featuring previously classified documents, audio and footage of strange objects in the sky. The new release comes two weeks after the ...