Skip to main contentSkip to navigationSkip to navigation Print subscriptions Search jobs Europe edition Australia edition International edition The Guardian - Back to homeThe Guardian Show moreHide expanded menu View all News Climate crisis Environment Global development View all Opinion The Guardian view Opinion videos View all Sport Rugby union View all Culture Art & design View all Lifestyle Health & fitness Home & garden Search input google-search Print subscriptions Search jobs Digital Archive Guardian Licensing The Guardian app Newsletters Today's paper Inside the Guardian Guardian Weekly Corrections Search input google-search Search jobs Digital Archive Guardian Licensing Climate crisis Environment Global development How the earth shook for nine days and nobody knew why – video An unprecedented planetary-scale seismic event caused the earth to vibrate for nine days straight back in 2023, but the reason why was unclear. Scientists initially had more questions than answers, labelling the event an unidentified seismic object and undertook a mammoth scientific collaboration across multiple countries and institutions to get to the bottom of what really happened. Josh Toussaint-Strauss looks into the mystery at the heart of this scientific investigation Entire Earth vibrated for nine days The original study conducted by Svennevig et al. (2024) and published in Science Josh Toussaint-Strauss Alex Healey Steve Glew Ali Assaf Ryan Baxter, Source: The Guardian Thu 19 Jun 2025 17.48 CEST Explore more on these topics Natural disasters It's Complicated Most viewed Most viewed Climate crisis Environment Global development Original reporting and incisive analysis, direct from the Guardian every morningSign up for our email Complaints & corrections Work for us Privacy policy Cookie policy Terms & conditions All writers Digital newspaper archive Tax strategy Newsletters Advertise with us Search UK jobs Back to top © 2025 Guardian News & Media Limited or its affiliated companies. All rights reserved. (dcr)