NASA Discovers Rare 730‑Foot Lunar Crater
A NASA researcher has identified a 730‑foot wide crater, dubbed McGetchin, that likely formed from a comet or asteroid impact in spring 2024. The event is considered a once‑in‑a‑century occurrence and offers a unique chance to study lunar geology in real time.
By Felo News Desk · Published
In a surprising find that could reshape our understanding of lunar geology, a NASA scientist has uncovered a new crater on the Moon’s surface that measures 730 feet (222 metres) across. The impact, named McGetchin, is believed to have formed in the spring of 2024 when a comet or asteroid slammed into the lunar regolith, creating a hole the size of a multi‑story building.
Discovery and Identification
The crater was first spotted by Robert Wagner, a researcher working on NASA’s Lunar Reconnaissance Orbiter (LRO) mission. Using high‑resolution imagery from the LRO, which has been mapping the Moon since 2009, Wagner noticed a bright spot surrounded by a darker halo—a hallmark of a fresh impact. The feature had remained hidden in older data until the latest scans revealed its distinct shape and size.
NASA’s blog post confirms the dimensions and notes that the crater’s appearance is consistent with a recent collision. The bright interior indicates fresh, unmelted material, while the surrounding dark ring suggests a rim of pulverised regolith that has yet to be weathered by micrometeorite bombardment.
Scientific Significance
Scientists estimate that impacts of this magnitude on the Moon occur roughly once every 132 years, making McGetchin a rare and valuable laboratory. A study published in the journal Science Advances highlighted that this is the largest new crater ever identified in the solar system. The event provides a unique opportunity to observe the immediate aftermath of an impact, offering insights into the Moon’s subsurface composition and the mechanics of crater formation.
Unlike Earth, the Moon lacks a substantial atmosphere, so incoming space debris travels unimpeded to the surface. This absence of atmospheric braking means that even relatively small objects can deliver significant kinetic energy, creating noticeable features on the lunar landscape.
Implications for Future Lunar Exploration
Understanding the formation and evolution of lunar craters is critical as both the United States and China plan crewed missions to the Moon. Real‑time data from McGetchin could inform the design of habitats, landing sites, and surface operations by revealing how impact ejecta behaves and how regolith properties vary across freshly exposed terrain.
NASA’s Artemis program, which aims to establish a sustainable presence on the Moon, could benefit from the crater’s data. By studying the distribution of debris and the structural integrity of the surrounding regolith, engineers can better assess potential hazards for future landers and rovers.
Next Steps and Ongoing Research
Researchers are currently analysing the crater’s spectral signatures to determine the mineral composition of the exposed material. Preliminary findings suggest a mix of basaltic and anorthositic rocks, typical of the lunar highlands. Further investigations will involve tracking the crater’s morphological changes over time to understand how the lunar surface heals and erodes without atmospheric processes.
While the crater has been present for years, its recent identification underscores the importance of continuous monitoring and advanced imaging techniques. NASA plans to schedule additional LRO passes to capture high‑resolution imagery, which will be shared with the scientific community for collaborative analysis.
As the lunar exploration timeline progresses, McGetchin stands as a living laboratory—an event that will help scientists refine models of impact physics, inform mission planning, and deepen our knowledge of the Moon’s geological history.
Public Engagement and Transparency
NASA has made the crater’s images publicly available through its open‑data portal, encouraging citizen scientists and educators to examine the feature. The agency’s commitment to transparency ensures that the broader community can participate in the discovery process, fostering a collaborative environment for lunar science.
Key facts
- McGetchin crater is 730 ft wide, formed in 2024 by a comet/asteroid impact
- It is the largest new crater ever found in the solar system
- Impacts of this size happen roughly once every 132 years on the Moon
- The event provides a unique laboratory for studying lunar geology and impact physics
- Data from McGetchin will inform future lunar missions and habitat design
- NASA has made the crater’s images publicly available for research and education
Why it matters
McGetchin offers a rare, real‑time glimpse into lunar impact processes, providing essential data that could improve safety and design for upcoming crewed missions to the Moon.
Frequently asked questions
How was McGetchin discovered?
Robert Wagner, a NASA Lunar Reconnaissance Orbiter researcher, identified the crater in recent high‑resolution imagery that showed a bright spot surrounded by a dark halo.
Why is this crater considered rare?
Impacts that create craters of this size occur on the Moon about once every 132 years, making McGetchin a once‑in‑a‑century event.
What does the crater tell us about lunar geology?
It provides a fresh sample of exposed regolith, allowing scientists to study mineral composition, ejecta distribution, and crater formation mechanics without atmospheric interference.
Will this affect future lunar missions?
Yes, data from McGetchin can help assess landing site safety, habitat design, and surface operations for upcoming crewed missions by revealing how lunar regolith behaves after an impact.
Sources
- [1] france24.com — originally reported as “NASA finds a 'once in a century' lunar crater, bigger than the Roman Colosseum”
