... Orionids Meteor Shower to Peak Tonight . ... It is widely thought that that the meteors from the Orionids meteor shower , which peaks tonight, are just small pieces of Halley's Comet falling to Earth. ... Every year at this time the Earth crosses an old stream of bits from Halley 's Comet causing the Orionids display, named from the constellation (Orion) from which the meteors appear to originate. ... NASA Web Site Statements, Warnings, and Disclaimers . NASA Official: Jay Norris. ...