An asteroid the size of the Leaning Tower of Pisa is approaching Earth, but without danger to humans.

The National Aeronautics and Space Administration (NASA) has issued a warning about the approach of an asteroid, 2025 OW , about the size of the Leaning Tower of Pisa. Despite its proximity, the space agency assures that it does not pose a threat to our planet.

Asteroid 2025 OW is being closely monitored by NASA's Jet Propulsion Laboratory. Although its passage has generated interest due to its proximity to Earth's orbit, calculations indicate its trajectory will take it to a distance of approximately 393,000 miles from Earth. This distance places it slightly beyond the orbit of the Moon, which rules out any risk of a direct impact with our planet.

2025 OW isn't the only celestial body that will approach Earth in the coming days. Four other asteroids have been identified by space-based tracking systems. Two of them, ranging in size from 30 to 60 meters, will approach within more than a million kilometers. Another, smaller asteroid is expected on Saturday. However, asteroid 2025 OW is the largest and the closest to Earth, making it the most significant of this group.

NASA has explained that these types of celestial bodies are constantly monitored. While some may seem dangerous due to their magnitude or speed, most do not pose a real risk, as they tend to disintegrate upon contact with the Earth's atmosphere. In the specific case of asteroid 2025 OW , its length is approximately 210 feet, equivalent to about 64 meters, which could be compared to a 15-story building or a large commercial airplane. This object is traveling at a speed exceeding 47,000 miles per hour, a speed considered average for asteroids classified as "near-Earth." Despite its proximity, it will not be possible to observe it without the aid of specialized equipment, as its size and the distance at which it will pass make it invisible to the human eye and simple binoculars.

Asteroids like 2025 OW are tracked using advanced instruments, including ground-based telescopes and planetary radars, such as the Goldstone radar. These tools allow for highly accurate calculations of asteroid size, speed, and trajectory, which is crucial for determining any potential hazards and, if so, developing timely response strategies. To date, NASA has confirmed that there are no indications of any real danger associated with the passage of asteroid 2025 OW .

NASA, through its Center for Near-Earth Object Studies, maintains an up-to-date list of all monitored asteroids. It also conducts simulations to prepare for a potential threat. For now, most of the identified objects do not pose a danger, but monitoring and analysis continues to ensure that if one day a potentially dangerous object emerges, timely action can be taken.