SpaceX Rocket Stage to Slam Moon at 5,400mph
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- SpaceX rocket upper stage is on collision course with the moon after launching lunar landers more than a year ago, predicted to hit the moon's sunlit western limb near Einstein Crater at approximately 5,400mph — seven times the speed of sound
- Bill Gray, the space tracking expert who calculated the trajectory, noted the crash could have been avoided if the upper stage had been nudged into a solar orbit
- The impact will strike the moon's near side with energy equivalent to three tons of TNT, carving out a crater roughly 90ft across and 16ft deep, according to Los Alamos National Laboratory's Benjamin Fernando
- NASA's Lunar Reconnaissance Orbiter and South Korea's Danuri lunar orbiter will gather before-and-after images of the crash site
- Fernando said the moon's low gravity and lack of atmosphere means ejected material could stretch for miles into space and remain visible to telescopes for tens of minutes
- The event marks the second known accidental rocket crash into the moon, following a Chinese rocket segment that dug out two craters on the lunar far side in 2022
- Scientists framed the collision as a research opportunity to quantify debris impact hazards for future astronauts, though the impact flash is expected to be too dim to see from Earth
Why it matters: This is the first predictable, observable accidental rocket-to-moon impact, and both NASA and South Korea's Danuri will image it — turning SpaceX's leftover hardware into a free experiment in how lunar regolith responds to high-speed collisions. The 90ft crater and persistent dust plume will yield data that directly informs hazard planning for future crewed lunar missions.
