https://www.youtube.com/watch?v=dilBP_uWevU
During a routine data check on October 24, 2025, LRO image specialist Robert Wagner spotted a bright splash with a dark halo on the Moon’s eastern edge. Comparing before-and-after images showed a new crater. It formed between April 11 and May 22, 2024.
Now named McGetchin, it’s about 222 m (728 ft) wide and 43 m (141 ft) deep. NASA calls it the largest newly formed crater ever found in the solar system. The impactor was an asteroid or comet fragment the size of a three- to six-storey building. Hits this big happen roughly once a century.
LRO’s Diviner instrument also found a 4-mile-wide zone around it that is noticeably colder at night. The impact fluffed up the regolith. The results were published in Science Advances in September 2026.
Source: www.youtube.com · Also: NASA · Lunar and Planetary Institute