The parade of celestial events continues with the Orionid meteor shower, which lasts through Nov. 7. The shower peaks with about 20 meteors an hour late the Saturday night of Oct. 21. Orion, the hunter constellation, is easily spotted to the southwest with his belt of three stars. On Sunday, Oct. 22, a bright streak in the night sky will be comet 2P/Encke (named for Johann Franz Encke, who first calculated its orbit). Let us…