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Footage of this incredible bubble-like burst of light in the night sky was captured by cameras at an astronomical observatory in Hawaii.

Sky watchers have been flooding internet forums with speculation about the burst, filmed by a webcam mounted on the Canada-France-Hawaii Telescope on Mauna Kea.

Captured in time-lapse footage, the glowing sphere takes several minutes to expand until it virtually fills the frame - then it vanishes as mysteriously as it appeared.

It's looking more like a missile's exhaust.  To read the rest of the article, click here.