{"id":68095,"date":"2026-11-11T10:11:55","date_gmt":"2026-11-10T23:11:55","guid":{"rendered":"https:\/\/www.tomgrimshaw.com\/tomsblog\/?p=68095"},"modified":"2026-11-11T10:11:55","modified_gmt":"2026-11-10T23:11:55","slug":"earths-inner-core-changed-its-spin-heres-what-scientists-found","status":"publish","type":"post","link":"https:\/\/www.tomgrimshaw.com\/tomsblog\/?p=68095","title":{"rendered":"Earth\u2019s Inner Core Changed Its Spin \u2014 Here\u2019s What Scientists Found"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-68096\" src=\"https:\/\/www.tomgrimshaw.com\/tomsblog\/wp-content\/uploads\/2026\/11\/Earth_CrossSection.jpg\" alt=\"Earth CrossSection\" width=\"1648\" height=\"872\" srcset=\"https:\/\/www.tomgrimshaw.com\/tomsblog\/wp-content\/uploads\/2026\/11\/Earth_CrossSection.jpg 1648w, https:\/\/www.tomgrimshaw.com\/tomsblog\/wp-content\/uploads\/2026\/11\/Earth_CrossSection-300x159.jpg 300w, https:\/\/www.tomgrimshaw.com\/tomsblog\/wp-content\/uploads\/2026\/11\/Earth_CrossSection-1024x542.jpg 1024w, https:\/\/www.tomgrimshaw.com\/tomsblog\/wp-content\/uploads\/2026\/11\/Earth_CrossSection-768x406.jpg 768w, https:\/\/www.tomgrimshaw.com\/tomsblog\/wp-content\/uploads\/2026\/11\/Earth_CrossSection-1536x813.jpg 1536w\" sizes=\"auto, (max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px\" \/><\/p>\n<p>Earth\u2019s inner core may be changing its rotation, nearly 3,000 miles beneath our feet. Using decades of earthquake recordings, scientists have found evidence that this solid sphere of iron may sometimes rotate faster or slower than the rest of the planet. Discover how seismic waves reveal Earth&#8217;s deepest structure, why repeated earthquakes provide such important clues, and what this subtle change could tell us about the magnetic field and Earth&#8217;s rotation. The surprising detail lies in what scientists can actually measure.<\/p>\n<p><a href=\"https:\/\/www.youtube.com\/watch?v=_YPCyJX2KZE\">https:\/\/www.youtube.com\/watch?v=_YPCyJX2KZE<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Earth\u2019s inner core may be changing its rotation, nearly 3,000 miles beneath our feet. Using decades of earthquake recordings, scientists have found evidence that this solid sphere of iron may sometimes rotate faster or slower than the rest of the planet. Discover how seismic waves reveal Earth&#8217;s deepest structure, why repeated earthquakes provide such important &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.tomgrimshaw.com\/tomsblog\/?p=68095\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Earth\u2019s Inner Core Changed Its Spin \u2014 Here\u2019s What Scientists Found&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-68095","post","type-post","status-publish","format-standard","hentry","category-general-interest"],"_links":{"self":[{"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/posts\/68095","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=68095"}],"version-history":[{"count":1,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/posts\/68095\/revisions"}],"predecessor-version":[{"id":68097,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/posts\/68095\/revisions\/68097"}],"wp:attachment":[{"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=68095"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=68095"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=68095"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}