Resolve to YES if a new large impact structure is discovered before January 1, 2029. “Large” is defined as having a diameter of 50 km or more.

According to Earth Impact Database, there are 13 such impact structures with this diameter: Karakul, Vredefort, Chicxulub, Sudbury, Popigai, Manicouagan, Acraman, Morokweng, Kara, Beaverhead, Tookoonooka, Charlevoix, and Siljan Ring. I will use the Earth Impact Database, maintained by the PASSC, as the primary resolution source. If that is not updated, the “List of impact craters on earth” Wikipedia page may also be used. A peer reviewed journal article stating such a discovery would also be sufficient.