SpaceX Falcon 9 upper stage set for 5,400 mph lunar impact on August 5

The Falcon 9 upper stage will collide with the Moon’s surface at 5,400 mph (8,690 km/h) on Wednesday, August 5, according to NASA. The impact is expected to occur near the Einstein crater and produce a crater approximately 60 feet wide and 12 feet deep.

This 8,000-pound (4,000-kilogram) piece of space hardware has been drifting uncontrolled since its launch on January 15, 2025. It was the second stage of a SpaceX Falcon 9 rocket that delivered Firefly Aerospace’s Blue Ghost 1 lunar lander to the Moon under NASA’s Commercial Lunar Payload Services initiative.

Unlike most rocket stages, which re-enter Earth’s atmosphere or splash down in oceans after payload delivery, this stage required extra thrust to reach the Moon and was left stranded in a high-energy deep-space orbit. Over 18 months, gravitational and solar radiation forces gradually altered its trajectory until it became locked onto a collision course with the Moon.

The impact poses no danger to Earth. However, planetary scientists view the event as a rare opportunity. NASA and international partners—including South Korea’s Danuri lunar orbiter—plan to capture before-and-after imagery of the impact site.

Researchers aim to study how artificial impacts behave on airless bodies, gain insights into subsurface lunar geology, and assess dust ejection patterns relevant to future astronaut operations on the Moon.

Lunar impact

The rocket stage was never intended to strike the Moon. Its original mission was solely to boost the Blue Ghost 1 lander toward lunar orbit.

After exhausting its propellant, the stage entered an unstable deep-space orbit. It joined thousands of other pieces of orbital debris circulating beyond low-Earth orbit.

NASA’s Jimi Russell stated: “The impact poses no danger to Earth and Nasa scientists are planning to collect lunar data from the event and refine techniques for tracking objects in space,” as reported by the Guardian.

Space junk threat to future Moon bases

Though invisible from Earth, the impact may generate a dust plume rising up to 60 miles (100 kilometers) above the lunar surface—potentially observable by amateur astronomers equipped with appropriate instruments.

The Moon lacks an atmosphere to slow or burn up incoming objects. While meteoroid strikes are common, collisions with human-made hardware remain infrequent. Documented precedents include a Chinese rocket stage impact in 2022, NASA’s controlled LCROSS impact in 2009, and Russia’s Luna-25 crash during a failed soft landing attempt in 2023.

NASA and SpaceX are now discussing strategies to manage and dispose of future rocket stages more deliberately, as deep-space missions increase in frequency.

The approaching impact underscores a growing concern: cis-lunar space is becoming increasingly congested. With NASA’s Artemis program and multiple international habitat initiatives advancing, uncontrolled debris in unstable lunar orbits presents a tangible operational hazard.

Abandoned boosters and defunct satellites drifting near the Moon raise the risk of hypervelocity collisions—either with the lunar surface itself or with future crewed stations and infrastructure.

Establishing strict orbital debris mitigation protocols—and mandating end-of-mission disposal trajectories—is therefore considered highly important to prevent long-term contamination and cluttering of lunar orbit.