Each August, Earth passes through the ancient debris trail of comet Swift-Tuttle, and the sky answers with light. This year, the Perseids reach their peak on the nights of August 12 and 13, offering observers willing to seek out true darkness a chance to witness up to a hundred meteors per hour — including rare fireballs that linger and glow in unexpected colors. It is one of those recurring appointments the cosmos keeps faithfully, a reminder that we orbit through a universe still rich with wonder, even as a nearly-full moon threatens to dim the view.
Peak Perseids Meteor Shower Arrives This Week With Up to 100 Meteors Per Hour
A hundred meteors in a single hour, if you find the right dark sky
Mark
Why is the Perseids shower so much more popular than other meteor showers?
Mimi
Partly it's just comfort. You're watching in August when it's warm, not shivering through January. But it's also genuinely the most active show of the year—you can see dozens of meteors in an hour if you're in the right place.
Mark
What makes a fireball different from a regular shooting star?
Mimi
A fireball is a meteor that's bright enough to actually explode as it enters the atmosphere. It lasts longer, burns brighter, and sometimes shows colors. It's the difference between a spark and a flare.
Mark
So the comet that creates these meteors—where is it now?
Mimi
It's not here. It last passed closest to the sun in 1992 and won't come back until 2125. But it left behind this enormous tail of dust and debris, and we pass through it every summer.
Mark
Does light pollution really make that much difference?
Mimi
Dramatically. In a city you might see one or two meteors an hour. Drive an hour outside town and you could see fifty. It's the difference between watching and actually experiencing the shower.
Mark
What about the full moon—how much will that hurt?
Mimi
It depends on the night and your location, but the moon will definitely wash out the fainter meteors. You'll still see the bright fireballs, though. It's not a deal-breaker, just something to know going in.
Mark
If someone only has one night to watch, which night should it be?
Mimi
August 12 or 13. That's when the Earth passes through the densest part of the debris trail. You could see a hundred meteors an hour if conditions are perfect.
O Pulso
- The Perseids are peaking now, and the window for witnessing up to 100 meteors per hour is narrow — just the nights of August 12 and 13.
- A nearly-full moon looms as the shower's greatest obstacle, its scattered light capable of washing out the fainter meteors that make up most of the count.
- Urban light pollution compounds the problem — NASA scientists warn that city-bound observers may see only one or two meteors per hour, a fraction of what dark skies offer.
- Skywatchers are being urged to drive well beyond city limits, lie back without telescopes or binoculars, and simply let their eyes adjust to the northeastern sky where Perseus rises.
- Despite the lunar interference, the shower's signature fireballs — bright, slow, and colorful — are expected to cut through the moonlight and reward those who make the effort.
Each August, Earth passes through the ancient debris trail of comet Swift-Tuttle, and the sky answers with light. This year, the Perseids reach their peak on the nights of August 12 and 13, offering observers willing to seek out true darkness a chance to witness up to a hundred meteors per hour — including rare fireballs that linger and glow in unexpected colors. It is one of those recurring appointments the cosmos keeps faithfully, a reminder that we orbit through a universe still rich with wonder, even as a nearly-full moon threatens to dim the view.
The Perseids meteor shower is reaching its peak this week, with the most spectacular viewing expected on the nights of August 12 and 13. At its best, the shower can deliver up to a hundred meteors per hour — not just ordinary shooting stars, but genuine fireballs that burn visibly through the atmosphere, linger longer than typical meteors, and sometimes flash in unexpected colors.
The source of this annual display is comet 109P/Swift-Tuttle, which orbits the sun every 133 years and last made its closest approach in 1992. Though the comet itself won't return until 2125, the vast trail of dust and rocky debris it left behind crosses Earth's orbital path every summer, producing this reliable celestial gift. The Perseids have become the year's most popular meteor shower not just for their activity, but for their timing — warm summer nights make watching the sky a pleasure rather than an ordeal.
Still, this year's peak comes with a significant caveat. The August full moon falls just three days before the shower's climax, meaning the sky will be flooded with lunar light on the very nights you'll want to watch. That brightness can wash out fainter meteors and meaningfully reduce the count. Location matters just as much — NASA's Bill Cooke notes that city observers may see only one or two meteors per hour, while those who escape to genuinely dark skies can see dramatically more.
The prescription is simple: find dark ground, face the northeastern sky toward the constellation Perseus, and bring patience rather than equipment. Telescopes narrow your field of view and work against you. Even with moonlight cutting into the count, the Perseids' fireballs are bright enough to make the journey worthwhile.
The Perseids meteor shower arrives this week at its brightest moment, and if you find yourself under a truly dark sky, you could witness as many as a hundred meteors streaking overhead in a single hour. The show has been running since mid-July and will continue through late August, but the real spectacle happens on the nights of August 12 and 13, when the Earth passes through the densest part of the debris trail left behind by the Swift-Tuttle comet.
This particular meteor shower has earned its reputation as perhaps the year's most beloved celestial event, and for practical reasons. Unlike the Quadrantids, which demand you bundle up and venture outside in January's bitter cold, the Perseids arrive during summer when the night air is warm and watching the sky feels less like an endurance test. More importantly, it's genuinely active. During peak nights, observers can expect anywhere from 25 to 100 meteors per hour on average, according to the American Meteor Society. But these aren't just ordinary shooting stars. The Perseids are known for producing fireballs—meteors bright enough to explode visibly as they tear through the atmosphere. These fireballs linger longer than typical meteors and often display unexpected colors, making them worth the wait.
The source of this annual gift is the 109P/Swift-Tuttle comet, which orbits the sun once every 133 years. Earth's path around the sun carries it directly through the comet's tail each summer, where millions of dust particles and rocky fragments await. The comet itself last came closest to the sun in 1992 and won't return until 2125, but the debris it shed continues to provide us with this reliable display year after year.
If you're planning to watch, timing and location matter enormously. The best viewing window is the evenings of August 12 and 13, but you'll need to escape the city. Bill Cooke, who leads NASA's Meteoroid Environments Office, notes that urban observers might catch one or two meteors per hour at best, while those who drive far enough from light pollution can see dramatically more. Once you've found your spot, look toward the eastern horizon. The meteors will appear to radiate from the constellation Perseus, which rises in the northeast and climbs into the eastern sky as the night deepens. You don't need binoculars or telescopes—in fact, telescopes will only narrow your field of view and work against you. A clear sky and patience are your best tools.
There is one complication worth knowing about. The August full moon occurs just three days before the peak, meaning the moon will still be nearly full on the nights you'll be watching. That bright lunar light will scatter across the sky and wash out fainter meteors, potentially reducing the count you'll see by a significant margin. The exact impact depends on where the moon sits in the sky and how clear your location is, but it's a factor worth considering when you plan your night. Still, even with moonlight interference, the Perseids should deliver enough bright fireballs to make the effort worthwhile.
Citações Notáveis
Urban observers might catch one or two meteors per hour, while those far from light pollution can see dramatically more— Bill Cooke, NASA's Meteoroid Environments Office
Quer a matéria completa?
Leia o original em CNET ↗
Climate & Environment