Hideously bloated slug-like aliens could be coming to "wipe out" humans in a "Star Wars" invasion, an Oxford University biologist has warned. If the universe is teeming with life as he expects, these ...

They are often depicted as either little green men, bug-eyed creatures or terrifying monsters intent on wiping out all life on Earth. But if aliens do exist, what might they actually look like?

BRITISH scientists have claimed alien lifeforms may have evolved in a similar way to the organisms here on Earth. A new study from the University of Oxford suggested that the process of natural ...

What do you think aliens look like? Well, an artist’s impression shows what most Brits imagine – and they have two heads, gills and the ability to change colour. Researchers asked 2,000 people to ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. If Earth’s ...

Advanced aliens could be chatting with each other using light flashes in plain sight, similar to how fireflies communicate, according to a new study that could lead to new approaches in finding ...

Trump has ordered a UFO data release. But if aliens exist, what would they think of us? - For generations, human beings have ...