Scientists have discovered a massive new crater on the moon, measuring 728 feet across and 141 feet deep, arising from a powerful impact that went unnoticed for two years. This crater, the largest known impact site formed in recent times, offers a rare chance to study lunar geology, as such significant events occur roughly every 132 years.
Named after Thomas McGetchin, a former director of Houston’s Lunar and Planetary Institute, this crater was first spotted by NASA’s Lunar Reconnaissance Orbiter (LRO) in May 2024, shortly after it formed from an asteroid or comet fragment. The detection was delayed until August 2025 due to the sheer volume of data, with more detailed images taken later.
The impact reshaped the lunar surface over 66 miles and caused dust and soil to be ejected higher than expected. Researchers have also noted a unique cold spot around the crater, suggesting a disturbance in the moon’s topsoil akin to gardening.
The findings challenge earlier assumptions about the moon’s surface, as it seems the top layer of lunar soil is disturbed much more frequently than previously believed, with the possibility that features like Apollo footprints won’t last as long as once thought. Moving forward, scientists will assess the risks posed by ejected materials to the planned lunar base, ensuring structures are designed to withstand potential impacts.
