The impact crater. Credit: KASA
It happened, folks. The dead SpaceX rocket stage we wrote about last week really did hit the Moon.
At about 06:35 UTC on August 5, 2026, the spent upper stage of a SpaceX Falcon 9 slammed into the lunar surface at roughly 8,700 kilometers per hour (5,400 mph). The four-ton piece of space hardware punched out a fresh crater and blasted lunar dust high above the surface.
What began as a piece of space junk had suddenly become an unplanned science experiment, and it was a surprisingly useful one.
A New Crater
The object was the empty upper stage of a SpaceX Falcon 9 rocket launched in January 2025 to send two lunar landers toward the Moon. Its reusable booster returned to Earth, but the upper stage remained in space, drifting through a long, looping orbit shaped by the gravity of Earth, the Moon and the Sun.
At about 6:35 a.m. GMT on Wednesday, the stage hit the Moon at roughly 8,700 kilometers per hour (5,400 miles per hour). It was about the size of a five-story building and weighed about 4,000 kilograms on Earth.
The crash wasn’t part of the mission plan. At a NASA press conference on Aug. 3, Julianna Scheiman, SpaceX’s director of NASA Science and Dragon Programs, said solar activity and gravity had put the spent rocket stage on a path toward the Moon. But astronomers tried to learn as much as possible from it.
South Korea’s space agency later released before-and-after images from its Danuri lunar orbiter. The pictures showed a darker patch where the rocket had struck, giving scientists their first look at the fresh damage from orbit. The Associated Press reported that Danuri passed over the impact site soon after the crash.
Before the impact, researchers estimated that the collision could release energy comparable to several tons of TNT. Dr. Sara Webb, an astrophysicist at Swinburne University, told The Guardian the crash likely gouged out a “massive” crater, perhaps 20 meters wide and 5 meters deep.
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Sifting Through the Plume
From Earth, the impact proved frustratingly hard to see. The flash was small and faint, even for observers using strong telescopes.
But the European Southern Observatory’s Very Large Telescope in Chile caught something more useful: spectral lines—bands of color that reveal what materials are present. The telescope detected sodium and lithium gas in the dust plume for five to 10 minutes after impact.
Sodium probably came from lunar soil. Lithium may have come from the rocket stage itself, Carl Schmidt, an astronomer at Boston University’s Center for Space Physics, told Reuters. He estimated that the plume stretched a few tens of kilometers across.
The crash happened near the Moon’s terminator line, the border between daylight and darkness. Sunlight briefly caught the dust thrown up by the impact, giving telescopes a narrow window to study it.
Credit: NASA Lunar Reconnaissance Orbiter
A Warning for the Moon Age
The Moon gets hit all the time by natural debris, including meteoroids. Artificial impacts remain rarer, but that may change with increasing lunar missions.
Space agencies want to build a long-term human presence on the Moon. That goal will require better tracking of debris, human or natural, in cislunar space, the region between Earth and the Moon.
Matt Bothwell, an astronomer at the University of Cambridge, put the concern bluntly.
“Space is getting more and more crowded,” according to the BBC. “[Each year] we launch more stuff into space.”
The crater on the Moon will not threaten anyone on Earth. But it showed how quickly yesterday’s mission hardware can become tomorrow’s lunar debris—and how little margin there may be as traffic around the moon increases.