{"id":111539,"date":"2024-10-07T21:05:55","date_gmt":"2024-10-07T14:05:55","guid":{"rendered":"https:\/\/hotvideos24.online\/?p=111539"},"modified":"2024-10-07T21:05:55","modified_gmt":"2024-10-07T14:05:55","slug":"scientists-discover-there-wasnt-just-one-asteroid-which-killed-dinosaurs-after-66-million-years","status":"publish","type":"post","link":"https:\/\/hotvideos24.online\/?p=111539","title":{"rendered":"Scientists discover there wasn\u2019t just one asteroid which killed dinosaurs \u2013 after 66 million years"},"content":{"rendered":"<p> <script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3711241968723425\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-layout-key=\"-fb+5w+4e-db+86\"\r\n     data-ad-client=\"ca-pub-3711241968723425\"\r\n     data-ad-slot=\"7910942971\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><br \/>\n<\/p>\n<div id=\"main\">\n<div data-testid=\"nsc-wrapper-support-us\">\n<div class=\"sc-16ay7ps-0 hAqRAM\">\n<div class=\"sc-16ay7ps-1 jbZASd\">\n<div class=\"sc-16ay7ps-14 bFnbmL\">\n<h3 data-testid=\"support-nsc-title\" class=\"sc-16ay7ps-2 horJcb\">Your support helps us to tell the story<\/h3>\n<\/div>\n<\/div>\n<p><amp-accordion animate=\"\" class=\"i-amphtml-layout-container\" i-amphtml-layout=\"container\"><\/p>\n<section class=\"sc-16ay7ps-18 bfRLhE\">\n<h4 class=\"sc-16ay7ps-3 bOpeIR\"><button class=\"sc-16ay7ps-4 jyAPhF closed-trigger\" data-testid=\"support-nsc-dropdown\"><span class=\"sc-16ay7ps-8 kDWcOx\"><span class=\"sc-16ay7ps-7 fiytbn\">Find out more<\/span><svg class=\"sc-eaj12q-0 bNRJWU sc-culv3z-0 jIhHch sc-16ay7ps-5 jJxovk\"><use href=\"#d5d9764c65d2cfa2\"\/><\/svg><\/span><\/button><button class=\"sc-16ay7ps-4 jyAPhF open-trigger\" data-testid=\"support-nsc-dropdown\"><span class=\"sc-16ay7ps-8 kDWcOx\"><span class=\"sc-16ay7ps-7 fiytbn\">Close<\/span><svg class=\"sc-eaj12q-0 bNRJWU sc-culv3z-0 jIhHch sc-16ay7ps-5 sc-16ay7ps-6 jJxovk cOIZLt\"><use href=\"#d5d9764c65d2cfa2\"\/><\/svg><\/span><\/button><\/h4>\n<div class=\"sc-16ay7ps-19 gdfHuZ\">\n<div>\n<p data-testid=\"support-nsc-collapsed-content\" class=\"sc-16ay7ps-9 hYsSsu\">Our mission is to deliver unbiased, fact-based reporting that holds power to account and exposes the truth.<\/p>\n<p>Whether $5 or $50, every contribution counts.<\/p>\n<p><b>Support us to deliver journalism without an agenda.<\/b><\/p>\n<div data-testid=\"support-nsc-author\" class=\"sc-16ay7ps-10 kOmKsa\"><img decoding=\"async\" src=\"https:\/\/s3.eu-west-1.amazonaws.com\/static.independent.co.uk\/static-assets\/support-us\/louise-thomas.png\" alt=\"Head shot of Louise Thomas\" class=\"sc-16ay7ps-13 jgqbGv\"\/><\/div>\n<\/div>\n<\/div>\n<\/section>\n<p><\/amp-accordion><\/div>\n<\/div>\n<p><a href=\"https:\/\/www.independent.co.uk\/space\/asteroid-alert-nasa-2024-on-b2610177.html\">A six-mile-long asteroid<\/a>, which struck Earth 66 million years ago, wiped out the dinosaurs and more than half of all life on Earth. The impact left a 124-mile-wide <a href=\"https:\/\/www.independent.co.uk\/topic\/crater\">crater<\/a> underneath the Gulf of Mexico\u2019s Yucat\u00e1n Peninsula. <\/p>\n<p>And, until now, it had been assumed that the asteroid acted alone.<\/p>\n<p>This week, scientists at Scotland\u2019s Heriot-Watt University have published new three-dimensional images of a crater made by <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/www.independent.co.uk\/topic\/asteroid\">a second asteroid that hit Earth<\/a> at around the same time off the coast of West Africa.<\/p>\n<p>The 5-mile-wide Nadir Crater was found nearly a thousand feet under <a href=\"https:\/\/www.independent.co.uk\/climate-change\/news\/mysterious-holes-atlantic-ocean-floor-b2132104.html\">the floor of the Atlantic Ocean<\/a>. Dr Uisdean Nicholson was part of the group that first found it a little over five years ago, but needed seismic data from the images to confirm what had made it.<\/p>\n<div class=\"sc-482ou5-2 eOHevC image align-none\">\n<figure class=\"sc-1cbdeug-0 cpcmmN\">\n<div data-gallery-length=\"4\" class=\"sc-482ou5-0 brdEfH\"><img decoding=\"async\" src=\"https:\/\/static.independent.co.uk\/2024\/10\/04\/20\/iStock-1312015176.jpg\" srcset=\"https:\/\/static.independent.co.uk\/2024\/10\/04\/20\/iStock-1312015176.jpg?quality=75&amp;width=320&amp;auto=webp 320w, https:\/\/static.independent.co.uk\/2024\/10\/04\/20\/iStock-1312015176.jpg?quality=75&amp;width=640&amp;auto=webp 640w\" loading=\"lazy\" alt=\"A fictional representation of Tyrannosaurus Rex with an asteroid falling from the sky in the background.\" class=\"sc-1mc30lb-0 iSVhwZ inline-gallery-btn\" on=\"tap:auto-image-gallery,inline-image-carousel.goToSlide(index=0)\" tabindex=\"0\" role=\"button\" data-gallery-length=\"4\"\/><\/div><figcaption class=\"sc-1cbdeug-1 sc-1cbdeug-3 hiCdLa liXvvg\">A fictional representation of Tyrannosaurus Rex with an asteroid falling from the sky in the background.<span class=\"sc-1cbdeug-7 izyooE\"> <!-- -->(<!-- -->Getty Images\/iStock<!-- -->)<\/span><\/figcaption><\/figure>\n<\/div>\n<p>\u201cIt reveals this crater in three dimensions for the first time \u2013 the first time we\u2019ve ever been able to see inside an impact crater,\u201d he told <em>The Independent <\/em>on Friday. <a rel=\"nofollow noopener\" data-affiliate=\"true\" target=\"_blank\" href=\"https:\/\/clicks.trx-hub.com\/xid\/esimedia_t58ukgmjkf95_theindependent?q=http%3A%2F%2Fgo.redirectingat.com%2F%3Fid%3D44681X1458326%26url%3Dhttps%253A%252F%252Fwww.nature.com%252Farticles%252Fs43247-024-01700-4%2523citeas%26sref%3D%2Fnews%2Fscience%2Fearth-asteroid-dinosaurs-extinction-reason-b2625006.html&amp;p=https%3A%2F%2Fwww.independent.co.uk%2Fnews%2Fscience%2Fearth-asteroid-dinosaurs-extinction-reason-b2625006.html&amp;article_id=2625006&amp;author=Julia+Musto&amp;tag=asteroids%2Ccrater&amp;section=Science&amp;category=&amp;sub_category=&amp;updated_time=2024-10-07T10%3A10%3A10.000Z&amp;utm_campaign=news-body&amp;utm_term=B-1&amp;utm_content=&amp;utm_medium=&amp;ref=&amp;utm_source=direct&amp;fbclid=&amp;gclid=\">The study<\/a> was published Thursday in the journal <em>Nature Communications Earth &amp; Environment.<\/em><\/p>\n<p>Craters are often destroyed or deformed by erosion and can be tricky to find because they\u2019ve been buried for millennia. The data provided to Nicholson\u2019s team, from the global geophysical company TGS, allowed them to see all of the crater\u2019s characteristics.<\/p>\n<p>\u201cSo, the crater itself is about 9,200m \u2013 that\u2019s what we call the rim. That\u2019s the main central part of the crater,\u201d Nicholson explained. \u201cAnd then there\u2019s a wider set of concentric features, or circular features, around it that we call the brim. That\u2019s, I think, about 22,000m in diameter. So, that\u2019s where the sea \u2026 bed got collapsed back in.\u201d<\/p>\n<div class=\"sc-482ou5-2 eOHevC image align-none\">\n<figure class=\"sc-1cbdeug-0 cpcmmN\">\n<div data-gallery-length=\"4\" class=\"sc-482ou5-0 iKUwEW\"><img decoding=\"async\" src=\"https:\/\/static.independent.co.uk\/2024\/10\/04\/20\/43247_2024_1700_Fig1_HTML.jpg\" srcset=\"https:\/\/static.independent.co.uk\/2024\/10\/04\/20\/43247_2024_1700_Fig1_HTML.jpg?quality=75&amp;width=320&amp;auto=webp 320w, https:\/\/static.independent.co.uk\/2024\/10\/04\/20\/43247_2024_1700_Fig1_HTML.jpg?quality=75&amp;width=640&amp;auto=webp 640w\" loading=\"lazy\" alt=\"A map shows the location of Nadir Crater off the coast of West Africa.\" class=\"sc-1mc30lb-0 iSVhwZ inline-gallery-btn\" on=\"tap:auto-image-gallery,inline-image-carousel.goToSlide(index=2)\" tabindex=\"0\" role=\"button\" data-gallery-length=\"4\"\/><\/div><figcaption class=\"sc-1cbdeug-1 sc-1cbdeug-3 hiCdLa liXvvg\">A map shows the location of Nadir Crater off the coast of West Africa.<span class=\"sc-1cbdeug-7 izyooE\"> <!-- -->(<!-- -->Uisdean Nicholson<!-- -->)<\/span><\/figcaption><\/figure>\n<\/div>\n<p>The asteroid that made the crater would have been larger than 1,300 feet wide, the scientists say. The closest that humans have come to seeing an asteroid this large crashing to Earth was in 1908, when a 164-foot-wide asteroid exploded over Siberia.<\/p>\n<p>\u201cWe haven\u2019t had anything like this in human history,\u201d Nicholson said.<\/p>\n<p>Entering Earth\u2019s atmosphere, the asteroid would become a fireball approximately 24 to 25 times the size of the sun, generating an enormous explosion in the air that was about a thousand times larger than the 2022 volcanic eruption in Tonga. It also would have caused a 7.0 magnitude earthquake, creating a \u201ctrain\u201d of tsunamis emanating from the center of the impact.<\/p>\n<p>Still, compared to the Mexican \u201cChicxulub\u201d asteroid, the one responsible for wiping out the dinosaurs, it\u2019s not as large in terms of the energy released.<\/p>\n<div class=\"sc-482ou5-2 eOHevC image align-none\">\n<figure class=\"sc-1cbdeug-0 cpcmmN\">\n<div data-gallery-length=\"4\" class=\"sc-482ou5-0 kbIHKR\"><img decoding=\"async\" src=\"https:\/\/static.independent.co.uk\/2024\/10\/04\/20\/Nadir-3D-view.jpg\" srcset=\"https:\/\/static.independent.co.uk\/2024\/10\/04\/20\/Nadir-3D-view.jpg?quality=75&amp;width=320&amp;auto=webp 320w, https:\/\/static.independent.co.uk\/2024\/10\/04\/20\/Nadir-3D-view.jpg?quality=75&amp;width=640&amp;auto=webp 640w\" loading=\"lazy\" alt=\"A three-dimensional view gives a look inside the Nadir Crater, including at its core and brim.\" class=\"sc-1mc30lb-0 iSVhwZ inline-gallery-btn\" on=\"tap:auto-image-gallery,inline-image-carousel.goToSlide(index=3)\" tabindex=\"0\" role=\"button\" data-gallery-length=\"4\"\/><\/div><figcaption class=\"sc-1cbdeug-1 sc-1cbdeug-3 hiCdLa liXvvg\">A three-dimensional view gives a look inside the Nadir Crater, including at its core and brim.<span class=\"sc-1cbdeug-7 izyooE\"> <!-- -->(<!-- -->Uisdean Nicholson<!-- -->)<\/span><\/figcaption><\/figure>\n<\/div>\n<p>Now, Nicholson hopes to test ideas about how the energy of the asteroid hit the area and what happened, as well as reconstruct the strike in more detail. The researchers want to drill down in the oceanfloor to get samples of the crater to try to understand all of this and more.<\/p>\n<p>Until then, having the data in 3D helps tremendously. Nicholson compared these images to newer generation medical scans.<\/p>\n<p>\u201cIt\u2019s like going from one old x-ray to having a full CT scan of your entire body,\u201d he said.<\/p>\n<\/div>\n<p><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3711241968723425\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-layout-key=\"-fb+5w+4e-db+86\"\r\n     data-ad-client=\"ca-pub-3711241968723425\"\r\n     data-ad-slot=\"7910942971\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><br \/>\n<br \/><div data-type=\"_mgwidget\" data-widget-id=\"1660802\">\r\n<\/div>\r\n<script>(function(w,q){w[q]=w[q]||[];w[q].push([\"_mgc.load\"])})(window,\"_mgq\");\r\n<\/script>\r\n<br \/>\n<br \/><a href=\"https:\/\/www.independent.co.uk\/news\/science\/earth-asteroid-dinosaurs-extinction-reason-b2625006.html\">Source link <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Your support helps us to tell the story Find out moreClose Our mission is to deliver unbiased, fact-based reporting that holds power to account and exposes the truth. Whether $5 &hellip; <a href=\"https:\/\/hotvideos24.online\/?p=111539\" class=\"more-link\">Read More<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8628],"tags":[],"class_list":["post-111539","post","type-post","status-publish","format-standard","hentry","category-science","entry"],"_links":{"self":[{"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/posts\/111539","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=111539"}],"version-history":[{"count":0,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/posts\/111539\/revisions"}],"wp:attachment":[{"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=111539"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=111539"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=111539"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}