A seismic wave from Japan's 2011 magnitude-9 earthquake travelled nearly 2,900 kilometres down to Earth's core, bounced back to the surface 13 minutes later, and shifted the entire country eastward by roughly six millimetres at the same instant — in the first - Space Daily

1. A seismic wave from Japan's 2011 magnitude-9 earthquake travelled nearly 2,900 kilometres down to Earth's core, bounced back to the surface 13 minutes later, and shifted the entire country eastward by roughly six millimetres at the same instant — in the first  Space Daily
2. An earthquake hit Japan so hard it made the entire country move  Scientific American
3. A 2011 earthquake bounced a seismic wave off Earth’s core, nudging Japan east  Science News
4. Powerful seismic waves from Japan's 2011 earthquake struck Earth's core and bounced back up, moving the island eastward  Phys.org
5. A Seismic Wave from the 2011 Japan 9.0 Earthquake Shifted the Entire Country — Now We Know Why  Discover Magazine