Skygazers have a lot to look forward to over the next month. A couple of dueling meteor showers will grace the skies later in July, and they will be joined by perhaps the most popular meteor shower of the year. Perseids are known for their bright fireballs and plentiful meteors. The show starts on Thursday, July 17, and will run through Aug. 23.
The reason the Perseids meteor shower is so popular is twofold. First, it takes place in the summer, so going outside and watching it is less uncomfortable than other large meteor showers like Quadrantids, which takes place in wintery January.
The other reason is that it’s one of the most active meteor showers of the year. During its peak, the meteor shower is known to spit as many as 100 meteors on average, according to the American Meteor Society. These not only include your typical shooting stars, but also a higher chance for fireballs, which are meteors that explode as they enter orbit. Per NASA, fireballs tend to last longer than standard shooting stars and can come in a variety of different colors.
Perseids come to Earth courtesy of the 109P/Swift-Tuttle comet. Earth’s orbit around the sun brings it through Swift-Tuttle’s tail every year. The comet itself takes 133 years to orbit the sun. Its last perihelion — the point at which it’s the closest to the sun — was in 1992. It won’t be back until the year 2125. Until then, it leaves behind an excellent tail of dust and debris to feed us yearly meteor showers.
How to watch the Perseids meteor shower
The best time to view the Perseids is during its peak, which occurs on the evenings of Aug. 12 and 13. During this time, the shower will produce anywhere from 25 to 100 meteors per hour on average. However, since the shower officially lasts for over a month, you have a chance to see a shooting star on any given evening, provided that you’re far enough away from light pollution.
Thus, if you’re planning on watching this year’s Perseids during their peak, you’ll want to get out of the city and suburbs as far as possible. According to Bill Cooke, lead of NASA’s Meteoroid Environments Office, folks in the city might see one or two meteors from the meteor shower per hour, which is pocket change compared to what those outside city limits might see.
Regardless, once you’ve arrived at wherever you want to watch the meteors, you’ll want to direct your attention to the radiant, or the point at which the meteors will appear to originate. Like all meteors, Perseids are named after the constellation from which they appear. In this case, it’s Perseus.
Per Stellarium’s free sky map, Perseus will rise from the northeastern horizon across the continental US on the evenings of Aug. 12 and 13. It’ll then rise into the eastern sky, where it’ll remain until after sunrise. So, in short, point yourself due east and you should be OK. Binoculars may help, but we recommend against telescopes since they’ll restrict your view of the sky to a very small portion, which may hinder your meteor-sighting efforts.
The American Meteor Society also notes that the moon may give viewers some difficulty. Perseids’ peak occurs just three days after August’s full moon, so the moon will still be mostly full. Thus, it is highly probable that light pollution from the moon may reduce the number of visible meteors by a hefty margin, depending on how things go.
