{"id":110064,"date":"2024-10-03T22:28:18","date_gmt":"2024-10-03T15:28:18","guid":{"rendered":"https:\/\/hotvideos24.online\/?p=110064"},"modified":"2024-10-03T22:28:18","modified_gmt":"2024-10-03T15:28:18","slug":"the-asteroid-that-killed-the-dinosaurs-was-not-alone-scientists-discover-evidence-that-a-second-devastating-space-rock-smashed-into-earth-66-million-years-ago","status":"publish","type":"post","link":"https:\/\/hotvideos24.online\/?p=110064","title":{"rendered":"The asteroid that killed the dinosaurs was NOT alone: Scientists discover evidence that a second devastating space rock smashed into Earth 66 million years ago"},"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 itemprop=\"articleBody\">\n<p class=\"mol-para-with-font\">It&#8217;s well known that the reign of the dinosaurs came to an end when a giant asteroid smashed into Earth 66 million years ago.<\/p>\n<p class=\"mol-para-with-font\">But a new study suggests that this huge asteroid wasn&#8217;t alone.<\/p>\n<p class=\"mol-para-with-font\">Scientists from Heriot Watt University have discovered evidence that a second devastating space rock smashed into Earth in the same year.<\/p>\n<p class=\"mol-para-with-font\">This second asteroid measured around 1,640ft (500 metres) wide, and struck Earth just off the coast of the Republic of Guinea in West Africa.<\/p>\n<p class=\"mol-para-with-font\">&#8216;The closest humans have come to seeing something like this is the 1908 Tunguska event, when a 50-metre asteroid entered Earth&#8217;s atmosphere and exploded in the skies above Siberia,&#8217; said Dr Uisdean Nicholson, who led the study.<\/p>\n<div class=\"artSplitter mol-img-group\" style=\"\">\n<div class=\"mol-img\">\n<div class=\"image-wrap\"> <img decoding=\"async\" id=\"i-f2af8a54b363f0e8\" src=\"https:\/\/i.dailymail.co.uk\/1s\/2024\/10\/03\/13\/90412315-13920301-image-a-53_1727958342794.jpg\" height=\"422\" width=\"634\" alt=\"It's well known that the reign of the dinosaurs came to an end when a giant asteroid smashed into Earth 66 million years ago. But a new study suggests that this huge asteroid wasn't alone (stock image)\" class=\"blkBorder img-share\" style=\"max-width:100%\" loading=\"lazy\" \/> <\/div>\n<p> <noscript> <img loading=\"lazy\" decoding=\"async\" id=\"i-f2af8a54b363f0e8\" src=\"https:\/\/i.dailymail.co.uk\/1s\/2024\/10\/03\/13\/90412315-13920301-image-a-53_1727958342794.jpg\" height=\"422\" width=\"634\" alt=\"It's well known that the reign of the dinosaurs came to an end when a giant asteroid smashed into Earth 66 million years ago. But a new study suggests that this huge asteroid wasn't alone (stock image)\" class=\"blkBorder img-share\" \/> <\/noscript> <\/div>\n<p class=\"imageCaption\">It&#8217;s well known that the reign of the dinosaurs came to an end when a giant asteroid smashed into Earth 66 million years ago. But a new study suggests that this huge asteroid wasn&#8217;t alone (stock image)\u00a0<\/p>\n<\/div>\n<p class=\"mol-para-with-font\">The first evidence of this second asteroid was uncovered in 2022, while Dr Nicholson and his team were studying seismic reflection data of the Atlantic Ocean&#8217;s seabed.<\/p>\n<p class=\"mol-para-with-font\">The data revealed a depression measuring almost five miles (9km) deep, which the team suspected could be an asteroid impact crater.<\/p>\n<p class=\"mol-para-with-font\">Now, the researchers have taken new high-resolution, 3D seismic images of the depression, which have confirmed their suspicions.<\/p>\n<p class=\"mol-para-with-font\">The crater has been dubbed the Nadir Crater, and was carved out when an asteroid struck Earth around 66 million years ago \u2013 the same age as the dinosaur-killing asteroid.<\/p>\n<p class=\"mol-para-with-font\">&#8216;There are around 20 confirmed marine craters worldwide, and none of them has been captured in anything close to this level of detail. It&#8217;s exquisite,&#8217; Dr Nicholson said.<\/p>\n<div class=\"artSplitter mol-img-group\" style=\"\">\n<div class=\"mol-img\">\n<div class=\"image-wrap\"> <img decoding=\"async\" id=\"i-96898fa70b84b965\" src=\"https:\/\/i.dailymail.co.uk\/1s\/2024\/10\/03\/14\/90412321-13920301-Now_the_researchers_have_taken_new_high_resolution_3D_seismic_im-a-60_1727961146926.jpg\" height=\"340\" width=\"634\" alt=\"Now, the researchers have taken new high-resolution, 3D seismic images of the depression, which have confirmed their suspicions\" class=\"blkBorder img-share\" style=\"max-width:100%\" loading=\"lazy\" \/> <\/div>\n<p> <noscript> <img loading=\"lazy\" decoding=\"async\" id=\"i-96898fa70b84b965\" src=\"https:\/\/i.dailymail.co.uk\/1s\/2024\/10\/03\/14\/90412321-13920301-Now_the_researchers_have_taken_new_high_resolution_3D_seismic_im-a-60_1727961146926.jpg\" height=\"340\" width=\"634\" alt=\"Now, the researchers have taken new high-resolution, 3D seismic images of the depression, which have confirmed their suspicions\" class=\"blkBorder img-share\" \/> <\/noscript> <\/div>\n<p class=\"imageCaption\">Now, the researchers have taken new high-resolution, 3D seismic images of the depression, which have confirmed their suspicions<\/p>\n<\/div>\n<div class=\"artSplitter mol-img-group\" style=\"\">\n<div class=\"mol-img\">\n<div class=\"image-wrap\"> <img decoding=\"async\" id=\"i-251ad342b9ca64a7\" src=\"https:\/\/i.dailymail.co.uk\/1s\/2024\/10\/03\/14\/90412313-13920301-image-a-57_1727960670662.jpg\" height=\"423\" width=\"634\" alt=\"Scientists from Heriot Watt University have discovered evidence that a second devastating space rock smashed into Earth in the same year as the one that wiped out the dinosaurs\" class=\"blkBorder img-share\" style=\"max-width:100%\" loading=\"lazy\" \/> <\/div>\n<p> <noscript> <img loading=\"lazy\" decoding=\"async\" id=\"i-251ad342b9ca64a7\" src=\"https:\/\/i.dailymail.co.uk\/1s\/2024\/10\/03\/14\/90412313-13920301-image-a-57_1727960670662.jpg\" height=\"423\" width=\"634\" alt=\"Scientists from Heriot Watt University have discovered evidence that a second devastating space rock smashed into Earth in the same year as the one that wiped out the dinosaurs\" class=\"blkBorder img-share\" \/> <\/noscript> <\/div>\n<p class=\"imageCaption\">Scientists from Heriot Watt University have discovered evidence that a second devastating space rock smashed into Earth in the same year as the one that wiped out the dinosaurs<\/p>\n<\/div>\n<p class=\"mol-para-with-font\">&#8216;Craters on the surface are usually heavily eroded and we can only see what is exposed, whereas craters on other planetary bodies usually only show the surface expression.<\/p>\n<p class=\"mol-para-with-font\">&#8216;These data allow us to image this fully in three dimensions and peel back the layers of sedimentary rock to look at the crater at all levels.&#8217;<\/p>\n<p class=\"mol-para-with-font\">Back in 2022, the researchers suggested that the asteroid would have been around 400 metres wide.<\/p>\n<p class=\"mol-para-with-font\">However, the new images confirm that it was even bigger than this.<\/p>\n<p class=\"mol-para-with-font\">Dr Nicholson said: &#8216;We now think it was 450-500m wide, because of the larger crater size as shown by the 3D data.<\/p>\n<p class=\"mol-para-with-font\">&#8216;We can tell it came from about 20-40 degrees to the northeast, because of spiralling thrust-generated ridges surrounding the crater&#8217;s central peak &#8211; those are only formed following a low-angle oblique impact.<\/p>\n<p class=\"mol-para-with-font\">&#8216;And we think it would have hit Earth at about 20 km per second, or 72,000 km per hour, although we still need to confirm this with a new set of impact models.&#8217;<\/p>\n<div class=\"artSplitter mol-img-group\" style=\"\">\n<div class=\"mol-img\">\n<div class=\"image-wrap\"> <img decoding=\"async\" id=\"i-2df5ec505712a87f\" src=\"https:\/\/i.dailymail.co.uk\/1s\/2024\/10\/03\/14\/90412319-13920301-This_second_asteroid_measured_around_1_640ft_500_metres_wide_and-a-59_1727961136554.jpg\" height=\"516\" width=\"634\" alt=\"This second asteroid measured around 1,640ft (500 metres) wide, and struck Earth just off the coast of the Republic of Guinea in West Africa (Nadir Crater, pictured)\" class=\"blkBorder img-share\" style=\"max-width:100%\" loading=\"lazy\" \/> <\/div>\n<p> <noscript> <img loading=\"lazy\" decoding=\"async\" id=\"i-2df5ec505712a87f\" src=\"https:\/\/i.dailymail.co.uk\/1s\/2024\/10\/03\/14\/90412319-13920301-This_second_asteroid_measured_around_1_640ft_500_metres_wide_and-a-59_1727961136554.jpg\" height=\"516\" width=\"634\" alt=\"This second asteroid measured around 1,640ft (500 metres) wide, and struck Earth just off the coast of the Republic of Guinea in West Africa (Nadir Crater, pictured)\" class=\"blkBorder img-share\" \/> <\/noscript> <\/div>\n<p class=\"imageCaption\">This second asteroid measured around 1,640ft (500 metres) wide, and struck Earth just off the coast of the Republic of Guinea in West Africa (Nadir Crater, pictured)\u00a0<\/p>\n<\/div>\n<p class=\"mol-para-with-font\">Based on the data, the scientists have created a timeline of what they think happened \u2013 from the initial collision to an 800-metre-plus high tsunami that would have travelled across the Atlantic ocean.<\/p>\n<p class=\"mol-para-with-font\">&#8216;After the impact and the central uplift forming, the soft sediments surrounding the crater flowed inwards towards the evacuated crater floor, creating a visible &#8220;brim&#8221;,&#8217; Dr Nicholson explained.<\/p>\n<p class=\"mol-para-with-font\">&#8216;The earthquake shaking caused by the impact appears to have liquefied the sediments below the seabed across the entire plateau, causing faults to form below the seabed.<\/p>\n<p class=\"mol-para-with-font\">&#8216;The impact was also associated with large landslides as the plateau margin collapsed below the ocean.<\/p>\n<p class=\"mol-para-with-font\">&#8216;As well as this, we see evidence for a train of tsunami waves going away from, then back towards the crater, with large resurge scars preserving evidence of this catastrophic event.&#8217;<\/p>\n<p class=\"mol-para-with-font\">While it&#8217;s been 116 years since an asteroid like this has been seen, it likely won&#8217;t be long before another huge space rock strikes our planet, according to NASA.<\/p>\n<p class=\"mol-para-with-font\">The US space agency predicts that asteroid Bennu has a one in 2,700 chance of smashing into Earth on 24 September 2182.<\/p>\n<p><mol-permabox id=\"mol-ef94daa0-8188-11ef-bfc7-83362a473a42\"><\/p>\n<div class=\" mol-factbox sciencetech art-ins\" data-version=\"2\" id=\"mol-6f183210-4953-11e8-b7b7-731aaa270ce1\" data-permabox-url=\"https:\/\/www.dailymail.co.uk\/sciencetech\/fb-5660669\/WHY-DID-DINOSAURS-EXTINCT.html\">\n<h3 class=\"mol-factbox-title\"><a href=\"https:\/\/www.dailymail.co.uk\/sciencetech\/fb-5660669\/WHY-DID-DINOSAURS-EXTINCT.html\">HOW THE DINOSAURS BECAME EXTINCT AROUND 66MILLION YEARS AGO<\/a><\/h3>\n<div class=\"ins cleared mol-factbox-body\">\n<p class=\"mol-para-with-font\">Dinosaurs ruled the Earth around 66million years ago, but suddenly disappeared in what is known as the Cretaceous-Tertiary extinction.<\/p>\n<p class=\"mol-para-with-font\">It was believed for many years that the changing climate destroyed the food chain of the huge reptiles.\u00a0<\/p>\n<p class=\"mol-para-with-font\">However, in the 1980s paleontologists discovered a layer of\u00a0iridium &#8211;\u00a0an element that is rare on Earth but found in vast quantities in space.\u00a0\u00a0<\/p>\n<p class=\"mol-para-with-font\">When this was dated, it coincided precisely with when the dinosaurs disappeared from the fossil record.\u00a0<\/p>\n<p class=\"mol-para-with-font\">A decade later, scientists uncovered\u00a0the massive Chicxulub Crater at the tip of Mexico\u2019s Yucat\u00e1n Peninsula, which dates to the period in question.\u00a0<\/p>\n<p class=\"mol-para-with-font\">Scientific consensus now says that these two factors are linked and they were both probably caused by an enormous asteroid crashing to Earth.<\/p>\n<p class=\"mol-para-with-font\">With the projected size and impact velocity, the collision would have caused an enormous shock wave and is likely to have triggered seismic activity.\u00a0<\/p>\n<p class=\"mol-para-with-font\">The fallout would have created plumes of ash thought to have covered the whole planet, making it impossible for dinosaurs to survive.\u00a0<\/p>\n<p class=\"mol-para-with-font\">Other animals and plant species had a shorter time-span between generations which allowed them to survive.<\/p>\n<p class=\"mol-para-with-font\">There are several other theories as to what caused the demise of the dinos.\u00a0<\/p>\n<p class=\"mol-para-with-font\">One early theory was that small mammals ate dinosaur eggs and another proposes that toxic angiosperms (flowering plants) killed them off.\u00a0\u00a0<\/p>\n<\/p><\/div>\n<\/div>\n<p><\/mol-permabox><\/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.dailymail.co.uk\/sciencetech\/article-13920301\/asteroid-killed-dinosaurs-scientists-discover-second-rock.html\">Source link <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>It&#8217;s well known that the reign of the dinosaurs came to an end when a giant asteroid smashed into Earth 66 million years ago. But a new study suggests that &hellip; <a href=\"https:\/\/hotvideos24.online\/?p=110064\" 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-110064","post","type-post","status-publish","format-standard","hentry","category-science","entry"],"_links":{"self":[{"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/posts\/110064","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=110064"}],"version-history":[{"count":0,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/posts\/110064\/revisions"}],"wp:attachment":[{"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=110064"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=110064"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=110064"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}