• A SpaceX Falcon 9 rocket's upper stage is on a collision course with the Moon.
• The impact is scheduled for 2:35 a.m. ET on August 5, 2026.
• The rocket piece weighs approximately 4,000 kg and is traveling at 5,400 mph.
• NASA plans to observe the event for scientific purposes.
• This incident underscores concerns about increasing space debris.

A SpaceX rocket piece, specifically the upper stage of a Falcon 9 rocket that launched a lunar lander in January 2025, is expected to collide with the Moon on August 5, 2026, at approximately 2:35 a.m. ET (0635 GMT). This school-bus-sized object is making its way towards Einstein Crater, traveling at about 5,400 mph (8,690 kph) and weighing around 4,000 kg (approximately four tonnes) according to BBC, Reuters, and South China Morning Post.

The collision, although unintentional, is anticipated to produce a remarkable plume of lunar dust, which may be illuminated by sunlight, although hard to see with the naked eye from Earth. Jilliana Scheiman, a director at SpaceX, indicated that the trajectory of the rocket stage was influenced by a mixture of solar activity and gravitational forces, placing it on a course toward the Moon, as reported by Reuters and South China Morning Post.

Space junk such as this rocket stage emphasizes the growing concern over the management and disposal of debris in space. Astronomer Bill Gray has noted that while this event may hold minor scientific interest, it underscores an issue of carelessness regarding leftover space hardware, pointing out that there was no danger to anyone from this upcoming impact according to BBC and Reuters.

Historically, impacts on the Moon from space junk are rare but not unprecedented. Other incidents include a Chinese rocket stage striking the Moon in March 2022 and planned impacts by NASA to study lunar material. NASA is also in discussions regarding strategies to prevent future unwanted lunar impacts, especially considering upcoming missions under its Artemis program aimed at establishing a sustainable human presence on the Moon, according to South China Morning Post and BBC.