Une partie d'une fusée SpaceX pourrait atterrir sur la Lune

A section of a retired SpaceX rocket is expected to strike the Moon unintentionally in late August, according to calculations by U.S. astronomer Bill Gray and the National Aeronautics and Space Administration (NASA). The object in question is the upper stage of a Falcon 9 rocket used to launch two lunar landers, Blue Ghost from the U.S.-based company Firefly Aerospace and Resilience from Japan’s ispace startup, in January 2025. The projected impact date has been set for August 5, though confirmation of the exact location and timing remains pending. The incident marks another instance of space debris potentially colliding with celestial bodies without prior planning. This follows a similar occurrence four years ago, when images captured by NASA’s Lunar Reconnaissance Orbiter suggested a piece of an old Chinese rocket had struck the Moon. At that time, Chinese authorities denied the claim, asserting that their spacecraft had not reached such a trajectory. The current situation, however, involves a component of a SpaceX rocket, which was launched earlier this year as part of commercial lunar exploration efforts. According to NASA, the visibility of the upcoming impact from Earth is uncertain. William Cooke, a manager within the agency, expressed skepticism about the likelihood of observing the event from our planet. “I think it will be very, very hard to see, if not impossible,” he remarked. To gather more data, NASA plans for its Lunar Reconnaissance Orbiter to pass over the suspected impact site several days before and after the expected collision. This maneuver could provide additional insights into the nature of the object and the conditions surrounding the impact. The Falcon 9 rocket, developed by SpaceX, has played a pivotal role in recent lunar missions. On January 15, 2025, it successfully launched both Blue Ghost and Resilience toward the Moon. These landers were part of broader international efforts to explore the lunar surface, with each mission carrying distinct scientific objectives. The Blue Ghost, operated by Firefly Aerospace, aimed to conduct geological surveys, while the Resilience, managed by ispace, focused on resource analysis and technology testing. The potential impact of the Falcon 9's upper stage highlights ongoing challenges in space debris management. While some collisions are planned as part of controlled experiments, others occur unpredictably due to the complex trajectories of defunct satellites and rocket components. In the past, NASA has conducted deliberate impacts on the Moon to study regolith composition and test instruments. However, unintended strikes remain a concern, especially as private companies increasingly contribute to the growing population of objects in orbit. SpaceX has yet to comment publicly on the possibility of the upper stage striking the Moon. The company, founded by Elon Musk, has been a key player in advancing reusable rocket technology and expanding access to space. Its involvement in lunar missions underscores the evolving landscape of space exploration, where public and private entities collaborate to push the boundaries of human knowledge. As the scheduled impact approaches, attention will likely shift toward monitoring the event and assessing its implications for future space operations.