One of the brightest stars in the sky will 'blink out' on Dec. 12. Here's how to watch.

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Betelgeuse, the most famous red supergiant star and one of the sky's brightest, will disappear for up to 12 seconds during an ultra-rare occultation by asteroid 319 Leona.

One of the brightest stars in the sky will 'blink out' on Dec. 12. Here's how to watch. : Read more