You'll know Earth is crossing the path of the most famous comet
Twice each year, Earth's orbit carries us through the ancient debris trail of Halley's comet — a celestial wanderer that visits only once in a human lifetime yet leaves its mark on our skies across generations. This May, that crossing produces the Eta Aquarids meteor shower, visible through May 28, with its peak arriving in the predawn hours of Tuesday morning. It is a reminder that even in absence, the great travelers of the solar system continue to touch us, scattering light across the darkness long after they have gone.
- Earth is cutting through the debris field of one of history's most famous comets, turning the predawn sky into a gallery of fast-moving light through the end of May.
- A nearly two-thirds full moon threatens to wash out the fainter streaks, narrowing the window for truly clear, dark viewing conditions.
- Observers are advised to escape city light pollution and resist the pull of their phone screens, as even brief exposure resets the night vision needed to catch the show.
- At peak on Tuesday morning, patient skywatchers in good conditions can expect 10 to 15 meteors per hour — swift, brilliant fragments burning away in their final seconds.
- Those who miss the Eta Aquarids still have the Southern Delta Aquarids to anticipate, arriving in late July and offering another passage through the solar system's scattered remnants.
Every 75 years, Halley's comet swings close enough to mark the occasion in history books. But its influence on our night sky is far more continuous than that single dramatic visit. The debris it sheds keeps circling the sun, and twice a year Earth's orbit carries us straight through those scattered trails. This May, we are crossing one of them — and the result is the Eta Aquarids meteor shower, lighting up the predawn darkness through May 28.
Watching the Eta Aquarids is, in a sense, watching Halley's comet by proxy. "You'll know that Earth is crossing the path of the most famous comet," said Shauna Edson of the Smithsonian's National Air and Space Museum. The meteors move unusually fast, and at Tuesday morning's peak, observers in good conditions can expect 10 to 15 per hour. What they are seeing is the final moment of tiny fragments — some no larger than grains of sand — burning away as they slam into the atmosphere at tremendous speed, the surrounding air glowing briefly in their wake.
No telescope is needed, only patience and darkness. The best viewing comes in the early morning hours before dawn, when the moon sits low. This year, a nearly two-thirds full moon will reduce how many meteors are visible, making truly dark, cloudless skies all the more valuable. City lights and phone screens are equally disruptive — both reset the night vision that allows fainter streaks to register at all.
The shower's window runs through May 28, giving stargazers several weeks to find their moment. And for those who miss it entirely, the Southern Delta Aquarids will peak in late July — another chance to stand outside and feel the quiet fact of Earth moving through the debris of distant, wandering worlds.
Every 75 years, Halley's comet makes its approach toward Earth—a visitor so famous that its arrivals are marked in history books and calendars. But the comet's influence on our night sky doesn't end when it swings past. The debris it leaves behind continues to circle the sun, and twice each year, Earth's orbit carries us directly through these scattered remnants. This May, we're crossing one of those trails, and the result is the Eta Aquarids, a meteor shower that will light up the predawn sky through the end of the month.
When you watch meteors streak across the darkness during the Eta Aquarids, you're witnessing something remarkable: a direct connection to one of astronomy's most storied objects. "You'll know that Earth is crossing the path of the most famous comet," said Shauna Edson, a scientist at the Smithsonian's National Air and Space Museum. The meteors themselves move fast—unusually fast, according to NASA's Bill Cooke. During Tuesday morning's peak, observers in ideal conditions can expect to see between 10 and 15 meteors per hour, a steady parade of light across the sky.
The mechanics of a meteor shower are straightforward but beautiful. As Earth travels around the sun, it periodically passes through clouds of debris left by comets and occasionally asteroids. When these fragments—some no larger than grains of sand, others considerably bigger—enter our atmosphere at tremendous speed, they encounter air resistance and heat up dramatically. The friction becomes so intense that the rocks burn away almost instantly, and in that final moment, the surrounding air glows. What we see from the ground is that glow: a brief, brilliant streak, the classic shooting star.
Viewing a meteor shower requires no telescope, no special equipment, nothing more than patience and darkness. The best window is the early morning hours, before dawn breaks, when the moon hangs low on the horizon. This timing matters because competing light sources—a bright moon, the glow of nearby cities, even a phone screen—will wash out the fainter meteors and make the whole display harder to see. This year, the moon will be nearly two-thirds full during the peak, which will reduce how many meteors are visible. The ideal night is one that is cloudless and moonless, or nearly so. And once you find your spot away from city lights, the advice is simple: keep your eyes on the sky. Looking down at a phone will only reset your night vision and cost you the meteors you might have caught.
The Eta Aquarids window extends through May 28, giving stargazers nearly a month to find a clear night. For those who miss this shower, the calendar offers another chance soon enough. The Southern Delta Aquarids will peak in late July, another opportunity to step outside and watch Earth pass through the cosmic debris of distant wanderers.
Notable Quotes
You'll know that Earth is crossing the path of the most famous comet— Shauna Edson, Smithsonian's National Air and Space Museum
Pretty fast meteors— Bill Cooke, NASA
The Hearth Conversation Another angle on the story
Why does Halley's comet create two meteor showers every year if it only comes near Earth once every 75 years?
Because the comet leaves a trail of debris behind it as it orbits the sun. Earth's path crosses that same trail twice each year, at different points. The comet itself is rare, but its leftovers are reliable.
So when I see a meteor during the Eta Aquarids, I'm actually seeing a piece of Halley's comet burning up?
Essentially, yes. A fragment of it, anyway. Something that broke off or was shed millions of miles away, now entering our atmosphere at incredible speed. It's a direct physical connection to something that's been observed for centuries.
The article mentions the moon will reduce visibility. How much of a difference does that actually make?
Significant. A bright moon washes out the fainter meteors entirely. You might see the brightest ones, but you'll miss half the show. A moonless night in a dark location can show you three or four times as many meteors.
Is there any reason to stay up late instead of waking up early?
The predawn hours are when the radiant point—where the meteors appear to come from—is highest in the sky. Late night viewing is possible, but you'll see fewer meteors. Early morning is genuinely better.
What happens to all this debris? Does it eventually run out?
Over time, yes. Each time Earth passes through the trail, we sweep up some of it. But comets shed enormous amounts of material, and the process takes thousands of years. The Eta Aquarids will likely be visible for centuries to come.