An eerie sighting over Washington DC has sparked claims that alien craft are hiding in America's skies.

Meme...I see. It is said that the government knows about the existence of aliens and has been hiding the evidence all ...

Pulverised technology from collapsed alien civilisations may lie scattered across the solar system, including on the Moon, a new study suggests. The likelihood of advanced aliens living at the same ...

We’ve been searching for aliens for a very long time, looking up at the sky for some sign that we're not alone. In more modern times, we’ve wondered whether an intelligence from somewhere else would ...