USGS data and peer-reviewed analyses confirm that magnitude 10+ earthquakes cannot occur on Earth, as they would require a fault rupture spanning most of the planet's circumference—far exceeding known subduction zones or plate boundaries. The 1960 Valdivia event at 9.5 remains the historical maximum, with all subsequent records below 9.2, reflecting physical limits on fault length, depth, and slip. Trader consensus at 98.8% "No" for a 10.0+ quake before 2027 aligns with this evidence, given the brief remaining window and absence of any seismic precursors or model shifts. Only an improbable extraterrestrial impact could theoretically exceed these bounds, though such events lie well outside standard tectonic forecasting.