A Spacex Rocket Is About To Crash Into The Moon—scientists Will Be Watching

Astronomers are gearing up for a unsocial satellite study event: A stray portion of a SpaceX Falcon 9 rocket is connected way to deed nan lunar aboveground connected August 5. The collision and its aftermath, which whitethorn beryllium visible from Earth and space-based telescopes, presents an opportunity for immoderate singular science.

In a new paper published connected arXiv, 23 astronomers telephone connected nan technological organization to observe nan event, noting that it whitethorn beryllium imaginable to grounds nan effect arsenic it happens. The clang could besides uncover caller accusation astir what happens successful nan contiguous aftermath of an effect connected nan lunar aboveground and connection insights into nan hazards of errant abstraction junk to nan moon.

The meandering spacecraft was first spotted by amateur astronomer Bill Gray. Launched successful January 2025, nan Falcon 9 ferried 2 landers to nan moon—Firefly Aerospace’s Blue Ghost and Japanese patient ispace’s Hakuto-R. After delivery, nan rocket’s precocious shape was meant to pain up connected reentry to Earth’s atmosphere. But arsenic Scientific American reported successful May, that didn’t happen.

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Instead, it entered orbit astir nan Earth astatine a akin region distant arsenic nan moon. Objects specified arsenic this are challenging to way from Earth, Gray notes successful a caller blog post. The rocket fragment’s mobility is difficult to predict, Gray wrote, because it is nether nan power of some gravity and star radiation pressure, a subtle unit that effects its guidance of recreation successful ways that are difficult to forecast.

Gray predicts that nan 4,000-kilogram abstraction junk will deed nan satellite astatine astir 2:34 A.M. EDT, and that it will clang adjacent to nan separator of nan satellite arsenic seen from Earth, adjacent nan Einstein crater. When it smashes into nan moon, it will beryllium walking astatine 5,400 miles an hour—several times nan velocity of sound—and pinch akin power to 3 tons of TNT, according to Gray.

In nan caller paper, astronomers (including Gray) constitute that detecting nan effect flash will apt beryllium challenging owed to nan astir apt clang location connected nan sunlit hemisphere of nan moon. Indeed, nary artificial aliases earthy effect flashes person ever been seen connected nan lit aboveground of nan moon, they write.

“The truth that nan effect is really adjacent to nan limb whitethorn really move retired to beryllium an advantage. Rocks ejected by nan effect whitethorn shape a ‘plume’ that will beryllium visible against nan acheronian inheritance erstwhile they’re disconnected nan moon,” Gray wrote successful his blog post, adding that what will beryllium visible will go much evident arsenic nan effect approaches.

“Maybe we’ll spot nan flash. Maybe we’ll spot rocks ejected from nan crater. Maybe we’ll moreover spot both.”

The crater will astir apt beryllium astir visible utilizing space-based observatories, and NASA’s Lunar Reconnaissance Orbiter is group to image nan effect tract some earlier nan collision and after, according to nan paper. South Korea’s Pathfinder Lunar Orbiter will besides effort to observe nan rocket part arsenic it impacts nan lunar aboveground and study nan aftermath.

The astronomers promote anyone capable to observe nan effect to springiness it a try—they constituent to guides to thief amateurs.

“The upcoming Falcon 9 precocious shape effect connected nan Moon connected 2026 August 5, presents an perfect opportunity for observers successful nan Americas and space-based assets to study a important lunar effect successful existent time,” nan authors write.

The arena is timely, they argue: NASA and different abstraction agencies are ramping up their lunar ambitions, pinch plans for quality missions to nan satellite and, eventually, permanently staffed moon bases. Tracking abstraction debris successful lunar orbit will beryllium important for these efforts, nan authors note.