{"id":207757,"date":"2026-05-14T21:24:00","date_gmt":"2026-05-14T21:24:00","guid":{"rendered":"http:\/\/6a06096e9db4c0cc7f8c7c02"},"modified":"2026-05-14T21:24:00","modified_gmt":"2026-05-14T21:24:00","slug":"el-polvo-de-estrellas-esta-en-todos-lados-encuentran-restos-de-supernovas-atrapados-en-la-antartida","status":"publish","type":"post","link":"https:\/\/sarmiento24h.com\/?p=207757","title":{"rendered":"El polvo de estrellas est\u00e1 en todos lados: encuentran restos de supernovas atrapados en la Ant\u00e1rtida"},"content":{"rendered":"<p>El \u201cpolvo de estrellas\u201d que impregna todo est\u00e1 lejos de ser una licencia po\u00e9tica. Cada vez surge m\u00e1s evidencia de que el material producido por estrellas de nuestra propia galaxia termina en los lugares menos sospechados. Un nuevo estudio encontr\u00f3 residuos de la nube interestelar local (LIC) en hielo ant\u00e1rtico con decenas de miles de a\u00f1os de antig\u00fcedad.<\/p>\n<p>En un art\u00edculo publicado en <em>Physical Review Letters<\/em>, un equipo de investigadores reporta la detecci\u00f3n de hierro\u201160, un is\u00f3topo extremadamente raro en la Tierra que solo se forma en explosiones estelares. Los cient\u00edficos concluyen que este material proviene de la nube de gas y polvo interestelar que el <a href=\"https:\/\/es.wired.com\/articulos\/encuentran-un-objeto-imposible-en-los-confines-del-sistema-solar-un-cuerpo-congelado-compacto-y-con-atmosfera-propia\">sistema solar<\/a> ha atravesado desde el final de la \u00faltima glaciaci\u00f3n.<\/p>\n<figure class=\"AssetEmbedWrapper-iJvQnD cOWUYC asset-embed\">\n<div class=\"AssetEmbedAssetContainer-fnduJP iaVSwI asset-embed__asset-container\"><span class=\"SpanWrapper-kFnjvc eKnjjD responsive-asset AssetEmbedResponsiveAsset-gaAbQ hXaxHA asset-embed__responsive-asset\"><picture class=\"ResponsiveImagePicture-jKunQM gjCCFj AssetEmbedResponsiveAsset-gaAbQ hXaxHA asset-embed__responsive-asset responsive-image\"><img decoding=\"async\" alt=\"Heliosfera\" loading=\"lazy\" class=\"ResponsiveImageContainer-dkeESL cQPiWi responsive-image__image\" srcset=\"https:\/\/media.es.wired.com\/photos\/6a06215bb20c3cf8ad785925\/master\/w_120,c_limit\/heliotail_wide_1.jpg 120w, https:\/\/media.es.wired.com\/photos\/6a06215bb20c3cf8ad785925\/master\/w_240,c_limit\/heliotail_wide_1.jpg 240w, https:\/\/media.es.wired.com\/photos\/6a06215bb20c3cf8ad785925\/master\/w_320,c_limit\/heliotail_wide_1.jpg 320w, https:\/\/media.es.wired.com\/photos\/6a06215bb20c3cf8ad785925\/master\/w_640,c_limit\/heliotail_wide_1.jpg 640w, https:\/\/media.es.wired.com\/photos\/6a06215bb20c3cf8ad785925\/master\/w_960,c_limit\/heliotail_wide_1.jpg 960w, https:\/\/media.es.wired.com\/photos\/6a06215bb20c3cf8ad785925\/master\/w_1280,c_limit\/heliotail_wide_1.jpg 1280w, https:\/\/media.es.wired.com\/photos\/6a06215bb20c3cf8ad785925\/master\/w_1600,c_limit\/heliotail_wide_1.jpg 1600w\" sizes=\"100vw\" src=\"https:\/\/media.es.wired.com\/photos\/6a06215bb20c3cf8ad785925\/master\/w_1600%2Cc_limit\/heliotail_wide_1.jpg\"><\/picture><\/span><\/div>\n<div class=\"CaptionWrapper-bpPcvW iDPSlt caption AssetEmbedCaption-eZIMNW gMgneI asset-embed__caption\" data-testid=\"caption-wrapper\" readability=\"7\"><span class=\"BaseText-fEwdHD CaptionText-cQpRdU kRTNAB hbiMYj caption__text\" readability=\"29\"><\/p>\n<p>Gr\u00e1fico que muestra c\u00f3mo el sistema solar viaja sobre el medio interestelar. La heli\u00f3sfera protege al sistema de la radiaci\u00f3n solar, pero parte del material estelar es absorbido por los planetas.<\/p>\n<p><\/span><span class=\"BaseText-fEwdHD CaptionCredit-cUgOGk iQbGEh hRFzlA caption__credit\">NASA<\/span><\/div>\n<\/figure>\n<h2>La historia desconocida que se\u00f1ala el hierro-60<\/h2>\n<p>Hoy, detectar hierro\u201160 ya no sorprende a los astr\u00f3nomos. Su origen es claro. Se trata de un is\u00f3topo radiactivo del hierro que solo aparece cuando una estrella masiva explota como <a href=\"https:\/\/es.wired.com\/articulos\/y-si-la-estrella-de-belen-fue-una-supernova-tres-hipotesis-cientificas-sobre-el-milagro\">supernova<\/a>. Lo que sigue en debate es c\u00f3mo llega ese material hasta nosotros y por qu\u00e9 en esa proporci\u00f3n.<\/p>\n<p>Un escenario propone que los restos de una supernova viajan durante millones de a\u00f1os por el espacio hasta alcanzar la Tierra. Otro plantea que el polvo enriquecido se acumula en ciertas regiones del medio interestelar y que, cuando un sistema planetario atraviesa una de estas nubes, sus planetas incorporan parte de ese material. El hallazgo en la <a href=\"https:\/\/es.wired.com\/articulos\/bajo-la-antartida-se-esconde-la-mayor-anomalia-gravitacional-de-la-tierra-y-al-fin-comenzamos-a-entenderla\">Ant\u00e1rtida<\/a> respalda esta segunda posibilidad.<\/p>\n<hr>\n<div class=\"ContentCardEmbedWrapper-hkvhYu kMYDit content-card-embed content-card-embed--stacked\" data-testid=\"ContentCardEmbedWrapper\" readability=\"17.5\">\n<div class=\"ContentCardEmbedImage-bqahne fjmzkP content-card-embed__image\" data-testid=\"ContentCardEmbedImage\"><span class=\"SpanWrapper-kFnjvc eKnjjD responsive-asset\"><picture class=\"ResponsiveImagePicture-jKunQM gjCCFj responsive-image\"><img decoding=\"async\" alt=\"Ilustraci\u00f3n de un planeta Tierra congelado.\" loading=\"lazy\" class=\"ResponsiveImageContainer-dkeESL cQPiWi responsive-image__image\" srcset=\"https:\/\/media.es.wired.com\/photos\/66da3a7a92b3255c36c5d06e\/master\/w_120,c_limit\/tierra%20congelada.jpg 120w, https:\/\/media.es.wired.com\/photos\/66da3a7a92b3255c36c5d06e\/master\/w_240,c_limit\/tierra%20congelada.jpg 240w, https:\/\/media.es.wired.com\/photos\/66da3a7a92b3255c36c5d06e\/master\/w_320,c_limit\/tierra%20congelada.jpg 320w, https:\/\/media.es.wired.com\/photos\/66da3a7a92b3255c36c5d06e\/master\/w_640,c_limit\/tierra%20congelada.jpg 640w\" sizes=\"100vw\" src=\"https:\/\/media.es.wired.com\/photos\/66da3a7a92b3255c36c5d06e\/master\/w_775%2Cc_limit\/tierra%2520congelada.jpg\"><\/picture><\/span><\/div>\n<div class=\"ContentCardEmbedInfo-buyHWH gWLOee\" readability=\"18.333333333333\">\n<div class=\"BaseText-fEwdHD ContentCardEmbedHed-kDKGDs fUtEc dlHXUJ content-card-embed__hed\" data-testid=\"ContentCardEmbedHed\"><a class=\"BaseLink-haTOKm ContentCardEmbedHedLink-iBZsco gAoKdC hhUFQU content-card-embed__hed-link link\" href=\"https:\/\/es.wired.com\/articulos\/el-paso-del-sistema-solar-a-traves-de-una-nube-cosmica-causo-una-de-las-glaciaciones-de-la-tierra\" data-testid=\"ContentCardEmbedHedLink\">El paso del sistema solar a trav\u00e9s de una nube c\u00f3smica caus\u00f3 una de las glaciaciones de la Tierra<\/a><\/div>\n<p>Cient\u00edficos de Harvard piensan que el sistema solar colision\u00f3 con una densa nube interestelar hace 2 o 3 millones de a\u00f1os.<\/p>\n<\/div>\n<\/div>\n<hr>\n<p>Durante a\u00f1os, los investigadores sospecharon que las nubes interestelares cercanas al sistema solar se formaron a partir de antiguas supernovas. Ahora, por fin cuentan con <a data-offer-url=\"https:\/\/journals.aps.org\/prl\/abstract\/10.1103\/nxjq-jwgp\" class=\"external-link\" data-event-click=\"{&quot;element&quot;:&quot;ExternalLink&quot;,&quot;outgoingURL&quot;:&quot;https:\/\/journals.aps.org\/prl\/abstract\/10.1103\/nxjq-jwgp&quot;}\" href=\"https:\/\/journals.aps.org\/prl\/abstract\/10.1103\/nxjq-jwgp\" rel=\"nofollow noopener\" target=\"_blank\">evidencia directa<\/a>. La clave es que el hielo analizado, formado entre 40,000 y 80,000 a\u00f1os atr\u00e1s, conserva un registro directo de lo que ca\u00eda sobre la Tierra en ese periodo.<\/p>\n<p>El equipo extrajo apenas unos miligramos de polvo atrapado en el hielo y midi\u00f3 el hierro\u201160 con una precisi\u00f3n in\u00e9dita. Luego compar\u00f3 esas mediciones con otros is\u00f3topos, como berilio\u201110 y aluminio\u201126, para descartar cualquier contaminaci\u00f3n terrestre. La se\u00f1al, aunque d\u00e9bil, resulta inequ\u00edvoca. El sistema solar ya se encontraba dentro de la nube interestelar local cuando se formaron esas capas de hielo.<\/p>\n<p>\u201cEsto significa que las nubes que rodean el sistema solar est\u00e1n vinculadas a una explosi\u00f3n estelar. Y, por primera vez, esto nos brinda la oportunidad de investigar el origen de estas nubes\u201d, dijo Dominik Koll, uno de los autores de la investigaci\u00f3n, en <a href=\"https:\/\/www.eurekalert.org\/news-releases\/1128030\">un comunicado.<\/a><\/p>\n<h2>La nube que actualmente atravesamos<\/h2>\n<p>La nube interestelar local que atravesamos, descrita por la Agencia Espacial Europea (ESA) como una regi\u00f3n \u201ccasi vac\u00eda\u201d compuesta por gas y polvo extremadamente tenue, es una estructura difusa por la que el sistema solar avanza con una direcci\u00f3n y velocidad bien definidas. No representa un entorno denso ni peligroso, sino una nube de baja densidad que forma parte de la estructura mayor conocida como la Burbuja Local.<\/p>\n<p>Aunque su composici\u00f3n es m\u00ednima, suficiente para que desde la perspectiva terrestre se comporte como un vac\u00edo, esta nube contiene trazas de elementos forjados en antiguas supernovas. Ese material, imperceptible pero persistente, aparece ahora atrapado en el hielo ant\u00e1rtico y permite reconstruir el recorrido del sistema solar a trav\u00e9s de su vecindario gal\u00e1ctico.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>El \u201cpolvo de estrellas\u201d que impregna todo&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":207758,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[46],"tags":[],"class_list":["post-207757","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tecnologia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - 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