Multiple outlets report that a major seismic wave generated by Japan’s 2011 magnitude-9 Tohoku earthquake travels deep into Earth, reflects off the core, and returns toward the surface. The wave is described as reaching nearly 2,900 kilometres down to Earth’s core and then bouncing back upward, arriving at the surface about 13 minutes later. Researchers say this reflected energy contributes to a measurable, small shift in Japan’s position. Several reports state the country’s land moves eastward by roughly six millimetres at the same time the reflected wave propagates back to the surface. The proposed mechanism is that the earthquake’s enormous energy causes motion not only in the crust but also in deeper layers, with the core-reflected wave producing a distinct signal. While the reported displacement is small in everyday terms, it is presented as an observable geophysical effect consistent across the accounts. Overall, the articles focus on timing, the distance to the core, and the magnitude and direction of Japan’s inferred eastward shift linked to the core reflection.