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?

This artist's impression shows what Brits reckon an alien would look like – with two heads, gills, and the ability to change colour. Researchers asked 2,000 people to describe what they think an ET ...

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 ...

Almost a third of Brits (31%) believe in aliens and UFOs – and have shared what they believe an extra-terrestrial life form would look like. The otherworldly creature is likely to stand at around five ...

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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 ...

The human race is rather introverted, apparently (Picture: Getty/Metro) ET could be phoning home, but we’re ghosting him, a new study has suggested. But why alien life has yet to be discovered could ...