Spooky Halloween Fireballs May Pose A Threat to Earth in 2032 and 2036

Every autumn, the Earth passes through debris trails left by Comet Encke, producing the mesmerizing Taurid meteor showers that light up the sky from late October into early November. These are famously known as “Halloween fireballs,” dazzling spectators with bright streaks of light that appear to radiate from the constellation Taurus, the bull. Most of the debris consists of small dust and rock particles that burn up harmlessly in the atmosphere. But a study has prompted fresh interest in what would happen if larger fragments from this stream were to cross paths with Earth in the future (Gizmodo).

What Are Taurid Meteor Showers?

The Taurids cross Earth’s orbit twice a year as our planet plows through the debris shed by Comet Encke — one of the shortest-period comets known, looping the Sun roughly every 3.3 years. The first encounter comes around Halloween, when the Northern and Southern Taurids are visible at night and produce the famed fireballs; the second arrives in June as the daytime Beta Taurids, which are largely lost in the glare of the Sun. The Taurids tend to be less dazzling than other showers overall but are prized for their unusually bright fireballs (ScienceDaily).

The Theory of the Taurid Resonant Swarm

The caution arises from a theoretical cluster within the Taurid stream known as the Taurid resonant swarm (TRS). The idea holds that larger fragments are corralled together by a gravitational resonance with Jupiter: objects in the stream complete seven orbits of the Sun for every two orbits Jupiter makes — a 7:2 resonance — so part of the stream lines up with Jupiter at regular intervals. The planet’s gravity could, in theory, gather the debris into denser groupings, raising the odds that Earth meets a thicker patch of the swarm in specific years, especially 2032 and 2036 (Discover Magazine).

The research comes from a team led by Mark Boslough, a research professor at the University of New Mexico, with co-authors Peter G. Brown, David Clark, Paul Wiegert, and Quanzhi Ye. Their paper, “2032 and 2036 risk enhancement from NEOs in the Taurid stream: Is there a significant coherent component to impact risk?”, was published in the journal Acta Astronautica as part of the proceedings of the 2025 Planetary Defense Conference in Cape Town, South Africa. Boslough notes that the evidence supporting the swarm includes historical records of bright fireballs and seismic readings of impacts on the Moon that line up with times the theory predicts the swarm would pass close by (Phys.org).

Mark Boslough: “The resonant swarm is theoretical, but there is some evidence that a sparse swarm of small objects exists because bright fireballs and seismic signatures of impacts on the moon have been observed at times that the theory has predicted.” (Phys.org)

Possible Risks in 2032 and 2036

If the swarm exists, Earth’s close approaches to it would raise the chance of encountering Near-Earth Objects (NEOs) large enough to explode in the atmosphere as airbursts. The team calculates that the swarm would pass within about 1° of Earth’s orbital position on the inbound leg in November 2032, and again on the outbound leg in June 2036. Such explosions might never reach the surface, yet they could still cause significant regional damage — the 2013 Chelyabinsk meteor, an airburst from a body roughly 60 feet across releasing about half a megaton of energy, shattered windows and sent some 1,500 people for medical care, while the far larger 1908 Tunguska blast over Siberia, likely a Beta Taurid, flattened forest across a wide area (Newsweek).

It is worth keeping that danger in proportion. The study found no evidence of any object in the Taurid stream large enough to cross the global-catastrophe threshold — in other words, nothing capable of ending civilization — though it could not rule out a population of Chelyabinsk- or Tunguska-sized fragments too small to spot until they are near Earth. As Boslough put it, the average probability is extremely low, so even an enhanced risk leaves the overall odds low; any large asteroids hiding in the swarm “are not likely to be world enders” (EarthSky).

Preparedness and Observation

“If we discover the objects with enough warning time, then we can take measures to reduce or eliminate the risk.” (Discover Magazine)

Rather than sound an alarm, the researchers are calling for targeted telescope surveys during the close approaches — and during the lead-up windows — to confirm or rule out the swarm and flag any hazardous objects. The geometry matters: the 2032 pass arrives on the nighttime side of Earth, where objects would be easier to spot, while the June 2036 pass comes from the direction of the Sun, so daytime fireballs would have to be exceptionally bright to be seen at all. Existing instruments can do much of the work, and NASA’s new infrared NEO Surveyor telescope — targeting launch in late 2027 — would extend warning time considerably. Boslough frames the effort the way people already treat earthquake, fire, and volcano risk: worth understanding and preparing for, not panicking over (Scientific American).

Mark Boslough on planetary defense: “It requires surveys to discover and track NEOs, campaigns to characterize those that are hazardous, modeling efforts to understand and predict impact effects and associated consequences, and mitigation through impact avoidance and/or civil defense.” (Newsweek)

For skywatchers who would rather enjoy the show than worry about it, the Taurids reward patience from a dark-sky location. Boslough points to Halloween night after 2 a.m. — once the moon has set and the sky is at its darkest — as a prime window to catch one of the season’s signature fireballs.

Summary

The Taurid meteor shower is a familiar autumn spectacle, but the possibility of a dense resonant swarm passing close to Earth in 2032 and 2036 has drawn careful scientific attention to the chance of larger meteoroids producing atmospheric airbursts. The probability remains low, and nothing identified so far rises to a planet-threatening scale. Continued targeted observation and improving detection technology will be key to monitoring the stream and turning a theoretical risk into something astronomers can measure, confirm, or set aside.