A strange new UFO story emerging from Colombia is drawing attention online after reports claimed an elderly couple witnessed a glowing metallic sphere descend into a remote jungle before investigators ...

The best way to find alien technosignatures is to look for ones that have long survived their creators, according to a new paper.

Astrophysicist Neil deGrasse Tyson, 67, explained how any alien visitor from another planet would likely look very different ...

Moon dust may be hiding signs of pulverised alien technology, scientist says - Grain-sized remnants of alien technology may get caught in solar wind and land on plants and moons close to us ...

The publication of 72 files from the FBI, CIA and Pentagon reveals testimony, videos and artistic depictions of what ...

The imaginary constructions of science fiction fill us with awe at their alien vastness. Which have you explored, and what was the most overwhelming?

The United States on Friday released another batch of classified files related to UFO sightings, including reports of glowing, red orbs seen in northeastern America ...