A strange UFO sighting in Susa Valley, Italy, leads to the construction of Sacra di San Michele, and according to theorists, ...

Physicist Brian Cox explores the Fermi paradox and why humanity has yet to discover evidence of extraterrestrial ...

A jellyfish-shaped object filmed near an Alaska military base has prompted UFO speculation, though UAP experts say it was most likely an unusual high-altitude balloon or kite-like device.

A jellyfish-shaped object filmed over Anchorage prompted UFO speculation, but footage analysis suggests it may have been a tethered octopus kite, although no definitive identification has been made.