Claims that aliens are already here are everywhere, but proving them is another matter. The strongest cases become more ...

UFO reports keep returning for reasons that are more complicated than they first appear. A small number of cases continue to ...

Jesse Michels discusses the evidence surrounding UFOs and why definitive proof of extraterrestrial technology remains elusive ...

U.S. UAP advisory council reviews 155,000 pages of declassified records, but AARO found no verifiable evidence of extraterrestrial activity.

An alien radio signal from K2-155 d? Are there any alien civilizations out there? For several decades, scientists have been searching for evidence that they exist. That effort is collectively known as ...

Experts believe ancient alien civilizations have been living on mars. See more in this clip from Season 1, Episode 7, "Mystery Hum and Mayans on Mars." ...

A group of experts provided their own estimates as to when actual proof of alien life will be discovered. According to the scientists, it is possible that traces of alien life will be found on Mars or ...

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 ...

The idea that extraterrestrial intelligence could be observing Earth sounds like science fiction, and there is currently no verified evidence that it is happening. But scientists do take a related ...

When I was an Associate Director of National Intelligence in 2006, a CBS News producer visited my office in Washington DC to explore doing a 60 minutes segment about me. The producer thought my career ...

If ancient alien explorers ever traipsed through Earth's cosmic neighborhood, could it be possible they left behind some ...