For years, a radio station broadcasting continuously out of Russia has managed to defy explanation.
For years, anthropologists struggled to determine which human ancestor the skull - along with two others - belonged to.
For years, rumors have circulated suggesting that the singer was replaced decades ago by a body double.
The remarkable spectacle, known as the CG 4 cometary globule, is situated 1,300 light years from Earth.
The surprisingly clear image shows what appears to be a metallic saucer-shaped object in the sky.
Scientists have been listening out for alien messages for years, but perhaps we'd be better off not receiving anything at all.
Recent renovation works have seemingly stirred up paranormal phenomena at the St Landry Parish courthouse.
Almost six decades ago, a chilling encounter with an unidentified object left one man with physical injuries.
At the time of its original release, some people believed that the iconic found-footage movie was actually real.
The Harvard astrophysicist has become synonymous with the hunt for evidence of aliens in recent years.
The SpaceX CEO has some ambitious plans to build a thriving city on the Red Planet within as little as 20 years.
A high-profile mass UFO sighting in Australia is still no closer to being solved almost six decades later.
For years, archaeologists have remained divided over the discovery of alleged giant skeletons and artifacts.
Over 45 years ago, pilot Frederick Valentich vanished without a trace after encountering a UFO off the coast of Australia.
An image shows what appears to be some sort of serpent-like creature in New York's Hudson River.
A newly identified ancestor of modern day frogs has been named after Jim Henson's iconic green Muppet.
David Paton believes that he had an otherworldly encounter while driving home one night over 30 years ago.
A former British Special Forces paratrooper claims that the UK military captured a crashed alien spacecraft in the 1980s.
The disappearance of Kenny Veach still remains a topic of debate and intrigue almost 10 years on.
Clive Palmer has announced his intention to fund the construction of a new Titanic for the second time in 10 years.