On the Sky News Daily podcast with Dermot Murnaghan we examine how sightings of unidentified flying objects went from conspiracy theory to US government inquiry – after officials told American media they can’t confirm or rule out alien activity.

We hear from Sean Cahill, who was the Chief Master-at-Arms on the USS Princeton in 2004 during a multi-day UFO encounter, plus 'UFO researcher’ Chris Jones and Scotland's Astronomer Royal Prof Catherine Heymans.

Daily podcast team:
Podcast producer - Annie Joyce
Podcast producer - Nicola Eyers
Podcast producer - Lauren Pinkney
Interviews producer - Tatiana Alderson
Archive - Simon Windsor
Archive - Rob Fellowes
Archive - Nelly Stefanova
Music - Steven Wheeler