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At 10:17 in the morning on June 17, 1929, a 7.8 magnitude earthquake shook New Zealand’s Murchison region, causing landslides that claimed seventeen lives, and sending seismic P-waves throughout the Earth’s interior, to be picked up by seismology stations scattered across the globe, including to a handful of outposts that, according to everything everybody knew about the inner structure of the Earth, should not have been able to detect the quake. For some, these results were