"The annual October meteor shower will peak before sunrise today, Saturday (Oct. 22) as the Earth passes through a stream of leftover dust from the famous Halley's Comet. TheOrionid meteor shower promises to offer skywatchers with a dark sky and good weather up to 15 meteors per hour at its peak, according to a NASA forecast.... The Orionids are visible each year, even though Halley's comet only swings by about every 75 years. This is because comets leave a trail of volatile ices and dust along their orbital path that hangs around long after the comets have come and gone."