Asteroids regularly pass through Earth’s cosmic neighbourhood, and most of them never attract public attention. Every so often, though, a newly discovered space rock sparks curiosity among scientists and space enthusiasts.
That was the case with asteroid 2024 YR4, an object first detected in late 2024. Early calculations suggested it might pass unusually close to the Moon in 2032. For a short time, astronomers even considered the possibility of an impact. The odds were never especially high, yet the idea of a lunar collision was enough to generate headlines and speculation. Now the picture has become much clearer. Scientists say the asteroid will not strike the Moon after all, and the latest observations show the chances of an impact have dropped to zero.
NASA rules out 2032 lunar impact chance for asteroid 2024 YR4
The asteroid known as 2024 YR4 is estimated to measure roughly 200 feet, or about 60 metres, across. That size makes it noticeable to astronomers, but far from the largest objects moving through the solar system. When it was first identified by sky surveys in 2024, its exact orbit was not yet perfectly understood. Early orbital models suggested the asteroid could pass extremely close to the Moon in December 2032.Initial estimates even placed the chance of a collision at around 4.3%.
For planetary scientists, that number was small but still worth monitoring carefully. Researchers continued observing the asteroid over time, hoping that additional data would clarify its future path.
James Webb Space Telescope observations refine asteroid 2024 YR4 orbit
A major breakthrough was achieved when the powerful James Webb Space Telescope was used to view the asteroid this year. This telescope, which is located well outside the Earth’s atmosphere, is capable of providing very precise data on the position of distant objects.
In February, the scientists used this data to update the calculations on the path of the asteroid.The new data has given the experts a new perspective on the path of the asteroid. After analyzing the new data, the experts at NASA have concluded that the path of the asteroid is a little further from the Moon than was originally anticipated.With the help of the new data, the experts at NASA have calculated that the asteroid will pass the Moon at a distance of 13,200 miles, or 21,200 kilometres.
Asteroid 2024 YR4 posed no threat to Earth, scientists confirm
When asteroid 2024 YR4 was first discovered, some early projections briefly suggested it could approach Earth as well. Those possibilities were quickly examined by astronomers who specialise in tracking near-Earth objects.Further analysis soon ruled out any chance of the asteroid striking our planet within the next century. As more observations came in, the Moon remained the only celestial body that might have been at risk.
Scientists emphasise that situations like this are fairly routine. When an asteroid is newly discovered, researchers usually have only a limited set of observations. With time, additional measurements improve the accuracy of the predicted orbit.
In many cases, early uncertainties gradually disappear as the object is tracked more precisely.
Why astronomers monitor asteroids so closely
Space agencies around the world regularly track objects that pass near Earth.
These bodies are known as near-Earth objects and include asteroids and comets. Most of them follow stable paths that pose no threat to our planet or the Moon.Understanding the exact orbit of each object helps scientists identify any potential hazards decades in advance. Early detection provides valuable time if an object were ever found on a collision course with Earth. Planetary defence programmes exist for that reason, and researchers continue improving detection systems and monitoring techniques.
Asteroid 2024 YR4 will safely pass the Moon in 2032
For now, the Moon appears to be completely safe from asteroid 2024 YR4. The updated predictions show that the space rock will quietly pass by in December 2032 without coming dangerously close.The Moon has endured countless impacts during its long history, and its cratered surface still records those ancient collisions. Even so, events involving large impacts are relatively rare in the present era.
