America’s most chilling unsolved alien sightings from Area 51, Skinwalker Ranch and the Roswell mystery on World UFO day

WORLD UFO Day has become an annual event for people to come together and observe the skies for these mystery objects.

Some Americans have claimed to have experienced several unexplainable incidents that have become infamous in their own right.

YouTubeWorld UFO Day has brought people together to discuss famous mysteries like the Skinwalker Ranch in Utah[/caption] Getty - ContributorArea 51 has been one of the world’s most famous UFO-related conspiracy theories[/caption] GettyThe...