---
title: "Space debris becomes a scientific experiment: Falcon 9 stage to crash into the Moon on August 5"
description: "On August 5, the upper stage of the Falcon 9 rocket will fall on the Moon. This is not just a fall of debris, but a large-scale scientific experiment: a 4-ton stage will crash into the Einstein crater, and the flash will be observed by telescopes around the world. 🌑🚀"
date: 2026-07-24T12:22:00.000Z
lang: en
url: https://xab.info/en/posts/space-debris-becomes-a-scientific-experiment-falcon-9-stage-to-crash-into-the-moon-on-august-5
tags: [spacex, falcon-9, moon, firefly-aerospace, ispace]
publisher: "XAB.info"
---

# Space debris becomes a scientific experiment: Falcon 9 stage to crash into the Moon on August 5

![SpaceX Falcon 9 rocket on the launch pad, ready for launch, whose first stage will be used for a scientific experiment to collide with the Moon on August 5](https://xab.info/media/2026/07/24/stupen-falcon-9-vrezhetsya-v-lunu-5-avgusta/stupen-falcon-9-vrezhetsya-v-lunu-5-avgusta-1.webp)

On August 5, a unique event will take place in space history, combining the problem of space debris with cutting-edge science. The upper stage of the SpaceX Falcon 9 launch vehicle, left in orbit after completing its mission, will perform a controlled impact with the lunar surface. This event will be the first time that the fall of a large artificial object onto Earth's satellite is carefully planned and documented by the international scientific community.

### From successful launch to gravity trap

The story of this cosmic "projectile" began on January 15, 2025, at the launch pad of the Kennedy Space Center. The Falcon 9 rocket successfully completed its primary task: placing two landing modules on a trajectory to the Moon — Blue Ghost from Firefly Aerospace and Resilience from the Japanese company ispace.

After the spacecraft undocked and headed for their destination, the rocket's upper stage was supposed to enter Earth's atmosphere and burn up. However, the maneuver failed. Due to a malfunction in the engines or software, the stage could not brake correctly. Instead of turning into ash in the upper layers of the atmosphere, it remained in a highly elliptical orbit, turning into an uncontrolled object trapped in the gravitational field of the Earth and the Moon.

### Trajectory calculation and impact parameters

The fate of this 12-meter metal cylinder was tracked by independent orbital analyst Bill Gray. Using his Project Pluto program, he modeled the future flight of the object. The data was cross-checked in physical simulators, allowing for a high-precision prediction of the impact location and time.

According to researchers' calculations, the stage has the following characteristics:

- Body length: about 12 meters;

- Width: 4 meters;

- Mass: almost 4000 kilograms.

The collision is scheduled for August 5 at 09:44 Kyiv time. The target will be the eastern part of the lunar disk, in the immediate vicinity of the Einstein crater.

### Observing the catastrophe: who and how will watch

Scientists have turned an inevitable accident into a large-scale experiment. At the moment of impact, the stage will fly in close proximity to the South Korean orbital spacecraft Korean Pathfinder Lunar Orbiter (KPLO). The instruments of the Korean probe will attempt to record data on the object's movement seconds before impact.

The situation with other spacecraft is less favorable: the NASA Lunar Reconnaissance Orbiter (LRO) will be on the far side of the Moon at this time and will not be able to record the impact or analyze the composition of the released gases.

However, the main hopes are pinned on ground-based observatories. Since the impact will occur on the sunlit side of the Moon, the collision should cause a bright flash and raise a giant trail of lunar dust. The best conditions for observation will be available to astronomers and amateurs in North and South America, where it will be night at the time of the event. Experts recommend preparing and testing telescopes in advance so as not to miss this rare moment.

### Scientific value of the artificial impact

Although the fall of the stage is a result of a malfunction, it carries huge scientific value. This will be the first time scientists can observe the dynamics of lunar dust when a large object with known parameters (mass, speed, entry angle) falls.

Data obtained as a result of this event will help:

- Refine models of lunar regolith behavior during asteroid impacts;

- Check the accuracy of modern methods for calculating the trajectories of celestial bodies;

- Prepare a database for future seismic experiments on the Moon.

Thus, "space debris" will become an important tool for understanding the physics of our nearest cosmic neighbor.