Orionid Meteor Shower 2009: Here's When And How To Watch (SEE PHOTOS)

Orionid Meteor Shower 2009:

The Orionid meteor shower is expected to put on a good show tonight into the predawn hours Wednesday, weather permitting.

This annual meteor shower is created when Earth passes through trails of comet debris left in space long ago by Halley's Comet. The "shooting stars" develop when bits typically no larger than a pea , and mostly sand-grain-sized, vaporize in Earth's upper atmosphere.

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