A passing star could disrupt the orbits of the planets and cause the Earth to be flung off into deep space.
Tantalizing new evidence of this mysterious world has been found courtesy of two deep infrared surveys.
In this episode, we dive deep into the chilling concept of 'second death' - the idea that even spirits may not linger forever.
A short video clip shows a series of large footprints indicating a stride much greater than that of any human.
A new documentary delves deep into the US government's alleged efforts to cover up an alien presence on Earth.
The signals have been inexplicably traced back to a galaxy that has been dormant for billions of years.
A terrifying predator of the deep sea has been sighted in much shallower waters than ever before.
Various space missions have sent signals into deep space and the earliest possible response time is fast approaching.
An intriguing new documentary is set to delve deep into the mystery of the UK's most famous UFO incident.
A police department in New Jersey reported that a drone it had sent up to investigate was unable to apprehend the objects.
The video shows the enormous serpent slithering from side to side with its huge belly protruding from the water.
New research has highlighted a place on Mars where we could still potentially find primitive alien life forms.
The series will see investigative journalist George Knapp delve deep into the mystery of UFOs and aliens.
Captivating footage captured during a deep-sea expedition shows a very unusual-looking creature.
Something in the ocean's deepest recesses is making a mysterious noise and now we know what it is.
The mystery of the alleged mummified 'aliens' unearthed in Peru seems to have taken yet another unexpected turn.
This alien-like fish, which typically lives 3,000ft beneath the surface of the ocean, is a very unusual find.
The footage, which sparked some intense debate online over its authenticity, appears to be the real deal.
Astronomers have been exploring whether these huge stellar explosions could be acting as deep space beacons.
The discovery provides further proof of life's ability to thrive in extremely deep, high-pressure environments.