This spectacular light show took place over Santiago on the night of December 18. What was it? Certainly not an aircraft. However, it could have been a fleet of balloons carrying flickering LED lights. Once, it would have been hard to generate enough luminosity from lightweight devices to create such a light show at this level, but that is no longer true. Still, this is a possible unknown.http://www.youtube.com/watch?v=LrssYOEeGT4
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