Full Breakdown
SpaceX Falcon 9 Upper Stage Set to Impact the Moon on August 5
8/4/2026, 7:53:49 PM
The Planned Lunar Collision
The spent upper stage of a Falcon 9 launched on January 15 2025 will strike the Moon’s sun-lit western limb near Einstein Crater at about 5,400 mph (8,700 km/h) on August 5 (early-morning ET). The 45-foot (13.8 m) stage, weighing roughly 8,800 lb (4,000 kg), will impact with kinetic energy comparable to 2–3 tons of TNT, likely forming a crater 65–100 ft (20–30 m) wide and 16–20 ft (5 m) deep, with an ejecta plume that could rise tens of kilometres.
Background & Context
The Falcon 9’s second stage delivered Firefly Aerospace’s Blue Ghost and ispace’s Resilience lunar landers. After deployment, the stage entered a highly elliptical Earth orbit; solar radiation pressure and lunar-Earth gravity interactions eventually placed it on a collision course with the Moon.
Data & Statistics
- Mass: 8,800 lb (4,000 kg)
- Impact speed: 5,400 mph (2.43 km s?¹)
- Energy release: 2–3 tons of TNT (various sources)
- Crater size: 65–100 ft (20–30 m) diameter
- Plume height: simulations suggest ejecta could reach 46–62 mi (75–100 km) or 15–20 km
Why It Matters
The impact provides a rare, predictable artificial collision on a celestial body. With known mass, shape and velocity, scientists can test crater-formation models and study lunar regolith behavior when struck by a hollow metal object—information useful for protecting future habitats, rovers and astronauts. It also underscores the growing challenge of managing debris in the Earth-Moon system as lunar activities increase.
Official Statements & Responses
NASA’s Centre for Near-Earth Object Studies confirmed the trajectory and said the impact poses no danger to Earth. SpaceX’s Julianna Scheiman, director of NASA Science and Dragon Programs, explained that solar activity and gravity forces placed the stage on a lunar path and that the company followed “the appropriate rules and regulations” for disposal. NASA’s Brent Garry, LRO project scientist, said the orbiter will image the site before and after impact to refine crater location.
Criticism & Opposition
Space policy analysts note a regulatory gap for lunar activities and call for a lunar registry and “Notices to Lunar Operators” similar to aviation and maritime safety notices.
Verbatim Quotes
- “The gravity on the moon is low, and there is no wind to blow the dust away,” — Los Alamos National Laboratory
- “Part of the reason for our interest in this event is to figure out how much of a hazard debris impacts pose to future astronauts,” — Benjamin Fernando, astronomer
- “As a scientist, I also am very excited to see the observation,” — Julianna Scheiman
Conflicting Reports & Gaps
- Energy estimate: CBS cites “8 tons of TNT,” while other analyses mention “2 tons” or “3 tons.”
- Crater dimensions: Reported ranges vary from 65 ft to 98 ft in diameter.
- Plume visibility: Some simulations predict a plume visible to ground-based telescopes; others deem the flash “quite iffy” against the bright lunar surface.
What’s Next
NASA will use the Lunar Reconnaissance Orbiter and South Korea’s Danuri orbiter to capture before-and-after imagery. SpaceX and NASA are studying disposal options for future high-energy missions to avoid accidental impacts, with data feeding into safety guidelines for upcoming Artemis bases and commercial lander operations.
