Eta Aquariid meteor shower peaks tonight with up to 60 meteors per hour

Tonight and into tomorrow morning, Earth passes through a river of cosmic dust, and the sky will answer with light. The Eta Aquariid meteor shower peaks over the next two nights—May 5 and 6—offering one of the year's most reliable celestial displays for anyone positioned to see it. The catch is geography. Where you stand on the planet determines almost everything about what you'll witness.

The meteors themselves are fragments, debris left behind by Halley's Comet as it orbited the sun. That famous visitor last came near Earth in 1986 and won't return until 2061, but the trail it carved through space remains, a permanent hazard in the inner solar system. Every May, our planet's orbit carries us directly through this debris field. When those particles—some no larger than grains of sand—collide with Earth's atmosphere at roughly 40.7 miles per second, friction ignites them. What we see from the ground is the luminous ghost of that collision: a meteor, a shooting star, a moment of light against darkness.

The numbers vary wildly depending on where you're watching from. Observers in the Southern Hemisphere and the tropical regions of the Northern Hemisphere will see the best show: up to 60 meteors per hour under ideal conditions. Someone in the southern United States might catch 10 to 30 per hour just before dawn. The reason is simple geometry. The meteors appear to radiate from the constellation Aquarius, which sits higher in the sky the farther south you are. From Canada, Europe, or the northern United States, Aquarius stays low on the horizon, which means fewer meteors will be visible—though those that do appear may streak across the sky in long, dramatic trails, skimming the horizon like stones skipped across water. Astronomers call these "Earthgrazers," and they have their own strange beauty.

Timing matters as much as location. The moon will be 63 percent illuminated on the morning of May 6, bright enough to wash out fainter meteors. But it sets in the early hours before dawn, which means the predawn darkness—roughly the two hours before sunrise—offers the best window. This is when the sky darkens completely and the meteors stand out most clearly. The shower has a broad peak, so meteors will be visible on the nights before and after the official maximum, but the concentration will be greatest on these two nights.

What makes the Eta Aquariids worth the effort of waking before dawn or staying up late is their reliability and their connection to one of history's most famous celestial visitors. Halley's Comet is the only bright comet that returns within a human lifetime, and it has been observed and recorded for centuries. The debris it leaves behind creates two meteor showers each year: this one in May and the Orionids in October. Both are gifts from the same source, reminders that even after a comet departs, its presence lingers in the solar system, touching Earth again and again. All you need is clear skies, darkness, and patience—and the willingness to look up at the right moment.