{"id":191926,"date":"2024-06-27T02:28:21","date_gmt":"2024-06-27T07:28:21","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2024\/06\/new-study-reveals-comet-airburst-evidence-from-12800-years-ago"},"modified":"2024-06-27T02:28:21","modified_gmt":"2024-06-27T07:28:21","slug":"new-study-reveals-comet-airburst-evidence-from-12800-years-ago","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2024\/06\/new-study-reveals-comet-airburst-evidence-from-12800-years-ago","title":{"rendered":"New study reveals comet airburst evidence from 12,800 years ago"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/new-study-reveals-comet-airburst-evidence-from-12800-years-ago3.jpg\"><\/a><\/p>\n<p>Researchers continue to expand the case for the Younger Dryas Impact hypothesis. The idea proposes that a fragmented comet smashed into the Earth\u2019s atmosphere 12,800 years ago, causing a widespread climatic shift that, among other things, led to the abrupt reversal of the Earth\u2019s warming trend and into an anomalous near-glacial period called the Younger Dryas.<\/p>\n<p>Now, UC Santa Barbara emeritus professor James Kennett and colleagues report the presence of proxies associated with the cosmic airburst distributed over several separate sites in the eastern United States (New Jersey, Maryland and South Carolina), materials indicative of the force and temperature involved in such an event, including platinum, microspherules, meltglass and shock-fractured quartz. The study <a href=\"https:\/\/www.scienceopen.com\/hosted-document?doi=10.14293\/ACI.2024.0003\" target=\"_blank\">appears in the journal <i>Airbursts and Cratering<\/i><\/a>.<\/p>\n<p>\u201cWhat we\u2019ve found is that the pressures and temperatures were not characteristic of major crater-forming impacts but were consistent with so-called \u2018touchdown\u2019 airbursts that don\u2019t form much in the way of craters,\u201d Kennett said.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Researchers continue to expand the case for the Younger Dryas Impact hypothesis. The idea proposes that a fragmented comet smashed into the Earth\u2019s atmosphere 12,800 years ago, causing a widespread climatic shift that, among other things, led to the abrupt reversal of the Earth\u2019s warming trend and into an anomalous near-glacial period called the Younger [\u2026]<\/p>\n","protected":false},"author":427,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1635,8],"tags":[],"class_list":["post-191926","post","type-post","status-publish","format-standard","hentry","category-materials","category-space"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/191926","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/427"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=191926"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/191926\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=191926"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=191926"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=191926"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}