Asteroid Could Create Spectacular Light Show When It Hits Moon in 2032

A Cosmic Collision Waiting to Happen

On December 22, 2032, Earth's skywatchers might witness something extraordinary. There's a 4.3% chance of asteroid 2024 YR4 hitting the lunar surface , and if it does, the lunar impact is likely to produce a bright flash visible from Earth, generate meteor showers in Earth's atmosphere, and create a long-lasting infrared glow .

The massive space rock, almost as large as a 15-story building, was first discovered on December 27, 2024 . Initially, scientists feared it might strike Earth, but astronomers deemed asteroid 2024 YR4 as potentially hazardous when it was first spotted two years ago, with the odds of it striking Earth reaching nearly 3%. Thankfully, those odds have since dwindled down to practically nothing, but the Moon is not safe from the menacing space rock .

The findings suggest the asteroid collision would be the most energetic lunar impact recorded in human history . The potential lunar impact will be historic, creating energy equivalent to 6.5 million tons of TNT and leaving the Moon with a crater around 1 kilometer (0.62 miles) in diameter .

A Flash Nearly as Bright as Venus

If the asteroid strikes, the spectacle will be impossible to miss. They found that the impact would result in a bright flash of a magnitude somewhere between -2.5 and -3. By comparison, Venus, the second brightest celestial object in the night sky after the Moon itself, shines with a magnitude between -3.7 and -4.9. At this level of luminosity, the impact would be visible to the naked eye .

The bright flash would last for several minutes after the impact, followed by an infrared afterglow that could persist for several hours . Skygazers could catch the flash from Earth at 10:19 a.m. EST (15:19 UTC) , though visibility would depend on whether the Moon had risen in your location at that time.

The impact would create more than just a single flash. An impact would lift many lunar rocks that would then rain back onto the moon's surface, causing potentially several thousand flashes. However, the flashes from these secondary impacts would not be as bright as the main one, and will probably be more difficult to see without any instruments .

Days of Meteor Storms

Perhaps the most dramatic consequence would unfold in the days following impact. The study also suggests the lunar impact could produce meteor showers that could last for days. If it were to strike the Moon's surface, the asteroid would fling up to 220 million pounds (100 million kilograms) of lunar rocks toward Earth .

That material would hit us within three to five days of the lunar impact, so around December 25 to 27, 2032 . In the days after the impact, there could be more than 1,000 times the normal number of meteors threatening Earth's satellites. Meanwhile, those of us on the ground would be treated to a "spectacular" meteor shower lighting up the night sky .

While this sounds alarming, Earth's atmosphere would protect the surface from the millimeter- to centimeter-sized lunar rocks . However, these meteors could be capable of destroying some satellites—and there are expected to be a lot more of those orbiting the planet by 2032. "A centimeter-sized rock traveling at tens of thousands of meters per second is a lot like a bullet" .

A Scientific Opportunity

If this scenario plays out, it will be a milestone for planetary science, turning the Earth-Moon system into a grand stage for validating our understanding of asteroid impacts . Scientists are already preparing detailed observation plans, from high-speed optical cameras trained on the Moon at the moment of impact to infrared telescopes tracking the cooling crater, lunar seismometers recording the shock, and meteor networks monitoring debris days to months later .

The event would also provide unprecedented insights into lunar geology. The impact could generate a moonquake with a magnitude of about 5, relative in strength to a moderate earthquake on Earth. Seismometers on the lunar surface could detect shaking across large distances. These vibrations would provide insight into how the Moon's crust transmits motion and how seismic waves travel through its interior .

While the odds remain relatively low, this potential cosmic collision represents a rare opportunity to witness and study a major astronomical event in real time. Whether or not 2024 YR4 actually strikes the Moon, the scientific community is already using this scenario to better understand impact dynamics and prepare for future observations of our celestial neighborhood.