NASA Six-Storey Asteroid Moon Impact Creates Massive New Crater

NASA six-storey asteroid moon impact events don't happen every day, but planetary scientists just confirmed that a building-sized space rock slammed into the lunar surface in an event so powerful it only occurs roughly once every 132 years.

Sometime between April 11 and May 22, 2024, a rogue piece of cosmic debris—likely a comet fragment or a six-storey asteroid—smashed into the eastern edge of the Moon. The force of the collision gouged out a steep-sided hole measuring approximately 728 feet (222 meters) across and 141 feet (43 meters) deep.

To put that in perspective, this single strike created a scar nearly three times larger than the previous record-holder for newly formed craters detected during the modern satellite era. NASA’s Lunar Reconnaissance Orbiter (LRO) team has officially named the feature the Thomas McGetchin crater, honoring the former director of Houston’s Lunar and Planetary Institute.

For space agency researchers planning human bases at the lunar south pole, the discovery is equal parts thrilling science and a urgent wake-up call.

How NASA Scientists Spotted the Lunar Collision

The Moon is peppered with millions of craters, so discovering a brand-new one requires painstaking satellite surveillance. The breakthrough came when LRO scientist Robert Wagner was scanning a large mosaic map of the eastern lunar limb. Wagner spotted an anomalously bright spot surrounded by a distinct dark halo—a telltale sign of freshly exposed subsurface rock.

Subsequent high-resolution target passes confirmed Wagner's suspicion: the orbiter was looking at fresh impact geology.

THOMAS MCGETCHIN CRATER AT A GLANCE
Target Location: Eastern Edge (Limb) of the Moon
Estimated Date: Between April 11 and May 22, 2024
Impactor Size: ~6-Storey Building (Asteroid or Comet Fragment)
Crater Diameter: 728 Feet (222 Meters)
Crater Depth: 141 Feet (43 Meters)
Disturbed Ejecta: Radiates over 66 Miles (100 Kilometers)
Event Rarity: ~1 Event Every 132 Years

When an asteroid strikes the airless Moon at high velocity, it doesn't just dig a hole. Without an atmosphere to burn up the incoming object or cushion the blast, the kinetic energy is transferred directly into the ground. The explosion vaporizes the impactor and throws up an extensive blanket of material called ejecta.

The Force of the Blast: Debris Flung 66 Miles Away

The physical footprint of the Thomas McGetchin crater goes far beyond its 728-foot rim.

Data gathered by the LRO reveals that disturbed regolith and debris were blasted outward over an area exceeding 66 miles (100 kilometers) in diameter. Here’s the thing: because the Moon has no atmosphere to slow down flying rock particles, even tiny pieces of gravel kicked up by an impact travel at rifle-bullet speeds for huge distances.

Scientists also detected a prominent "cold spot"—a region spanning roughly 4 miles (6.4 kilometers) around the immediate crater rim. This thermal anomaly occurs when high-energy shockwaves shatter the top layer of fine lunar soil, altering how the ground absorbs and radiates heat from the Sun.

That's the part that matters for engineers building hardware for the surface. A strike like this isn't just a localized event; it reshapes the local environment for miles around.

Why This Impact Threatens Future Artemis Lunar Outposts

As space agencies prepare to land astronauts on the Moon under NASA’s Artemis program, understanding impact dynamics isn't just an academic exercise—it’s a matter of crew survival.

Mainstream news outlets like BBC Science and Space.com frequently track asteroid flybys near Earth, but airless worlds bear the full brunt of celestial bombardment. If an impact of this scale were to occur anywhere near a human habitat, solar array, or landing pad, the resulting secondary ejecta rain could puncture habitats or scour sensitive optical sensors.

Space agencies are now using the data from the Thomas McGetchin crater to build better risk models:

Habitat Shielding: Outpost walls must withstand hypervelocity micro-meteorite storms triggered by distant impacts.

Infrastructure Placement: Vital equipment like fuel storage tanks and communication towers may need to be tucked behind natural ridges or crater walls.

Real-Time Orbital Detection: Orbital probes like LRO give engineers real-time data on how frequently medium-sized objects breach the lunar neighborhood.

For what it's worth, collisions of this magnitude are rare—happening roughly once a century. But as permanent human presence on the Moon shifts from science fiction to operational reality, tracking fresh cosmic scars is quickly becoming essential planetary defense.