Star gazers will want to be looking upward this weekend: The Orionid meteor shower is one of the best meteor showers of the year and should not be missed.

According to NASA's website: "Earth will pass through a stream of debris from Halley's Comet, (the) source of the annual Orionid meteor shower. Forecasters expect 25 meteors per hour when the shower peaks on Oct. 21."

The best part of this cosmic display: No telescope required—but you may need an alarm clock. According to L.A.'s Griffith Observatory, the brightest displays will fall between 11 p.m. Saturday and 5:40 a.m. Sunday, Pacific time.

Bill Cooke, the head of NASA's Meteoroid Environment Office, noted in a statement, "With no Moon to spoil the show, observing conditions should be ideal." He added, "The Orionid meteor shower isn't the strongest, but it is one of the most beautiful showers of the year."