Former US President Barack Obama comments on aliens have been trending online after was asked about them on a podcast It caused such a big stir he had to clarify on instagram that the US wasn’t hiding aliens saying: “I saw no evidence during my presidency that extraterrestrials have made contact with us. Really!” 

But it doesn’t matter, people’s imaginations had already stirred.

To discuss the chances of aliens having visited earth Claire chatted to Space Commentator, Leo Enright.