The theory of an ‘alien megastructure’ surrounding a distant star has been dealt a further blow with new scientific evidence. Despite very few people in the astronomical community still believing that ...

A theory as to why we haven't heard from aliens which renowned theoretical physicist and cosmologist Stephen Hawking agreed with has resurfaced online. Planet Earth is about the size of a speck of ...

Theories that a mystery space object could be a hostile alien spaceship have been revived after new photos showed it appearing to display a rotating double jet structure. Most boffins believe ...

If we discovered evidence of alien life, would we even realise it? Life on other planets could be so different from what we’re used to that we might not recognise any biological signatures that it ...