Back in 1973, this helicopter crew found themselves face-to-face with an unexplained flying object that astonishingly dragged their aircraft 1,800 feet in a mere 10 seconds!! #UFOWitness | Travel Channel

A man captures three UFOs gliding in perfect formation! 🛸😱 Catch all-new sightings on #ParanormalCaughtOnCamera, Sundays at 9/8c on TRVL. | Travel Channel

A wave of UFO sightings spreads across six countries. 🌍🛸 Don’t miss the exploration on #NASAsUnexplainedFiles, TONIGHT at 9/8c on TRVL! | Travel Channel

The history of UFO sightings in North America goes back nearly 80 years. Explore the timeline of some of the most famous sightings and listen to testimonials from witnesses and the experts who dedicate their careers into uncovering the mysteries behind them. Solve the unknown in the brand new series, UFOs: Investigating The Unknown, Tuesdays at 8pm on National Geographic UK. | National Geographic UK