A triangular UFO captured on infrared over Area 51 has gone viral, starting alien theories and questions about secret military tech.

The audio from a news report about an alleged alien spotting has been edited onto a digital creation showing an alien-like being. Posts online, however, thought the edited clip was a real news report.

Alien fanatics are currently enjoying a prolonged field day, with a whole host of conspiracy theories and sightings to get their teeth into. From whistleblower “revelations” about hushed-up spacecraft ...