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Meteor explodes over Arizona; big meteor shower begins

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A resounding boom over Tucson, Arizona, roused residents from their dinner tables Tuesday and had them pointing up to the sky.

The largest meteor shower of the year seemed to be giving them a sneak preview, as a whopper of a rock roared past over their heads.

It exploded, rattling their houses, and a dash cam captured it on video as it vanished in a bright blaze.

The spectacular annual Geminid meteor shower officially starts Thursday. Now, even with 100 to 120 meteors per hour at its peak, it has given itself a tough act to follow.