Debunking Earth's Most Infamous UFO Sightings
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Debunking Earth's Most Infamous UFO Sightings
Have we had a close encounter? For centuries, humans have wondered if we're alone in the universe. We examine the most famous UFO sightings and abduction claims, and ask if they're a figment of our imagination or proof of an otherworldly presence. Subscribe to Spark for more amazing science, tech & engineering videos: https://goo.gl/LIrlur 🚀 ...
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