Bright lights in the night sky. Strange sightings of flying saucers. What are UFOs, and could they be visitors from another planet? No one knows for sure. Explore this unsolved mystery, and why some people believe and others don’t.Bright lights in the night sky. Strange sightings of flying saucers. What are UFOs, and could they be visitors from another planet? No one knows for sure. Explore this unsolved mystery, and why some people believe and others don’t.
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