{"id":47634,"date":"2025-04-17T11:30:00","date_gmt":"2025-04-17T17:30:00","guid":{"rendered":"https:\/\/informante.mx\/?p=47634"},"modified":"2025-04-17T13:35:56","modified_gmt":"2025-04-17T19:35:56","slug":"hallan-mayor-indicio-de-vida-extraterrestre-hasta-la-fecha","status":"publish","type":"post","link":"https:\/\/informante.mx\/?p=47634","title":{"rendered":"Hallan mayor indicio de vida extraterrestre hasta la fecha"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">K2-18b nos acerca a responder la gran pregunta: \u00bfestamos solos? Sus biofirmas, detectadas con 99,7% de certeza, emocionan a cient\u00edficos que a\u00fan buscan pruebas concluyentes.<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Redacci\u00f3n Informante<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Un equipo de astr\u00f3nomos anunci\u00f3 este jueves (17.04.2025) que\u00a0el telescopio espacial Webb\u00a0ha detectado los \u00abindicios\u00bb m\u00e1s prometedores de la posible existencia de\u00a0vida en un planeta fuera\u00a0del\u00a0Sistema Solar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Si bien los investigadores enfatizaron la necesidad de m\u00e1s observaciones para confirmar el hallazgo, el anuncio ha generado tanto entusiasmo como reservas entre la comunidad cient\u00edfica.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El debate entre los c\u00edrculos cient\u00edficos sobre si el planeta K2-18b, situado a 124 a\u00f1os luz en la constelaci\u00f3n de Leo, podr\u00eda ser un mundo oce\u00e1nico capaz de albergar vida microbiana es intenso desde hace a\u00f1os.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Biofirmas extraterrestres: lo que revela el Telescopio James Webb<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Gracias al Telescopio Espacial James Webb, un equipo de investigadores brit\u00e1nico-estadounidense detect\u00f3 se\u00f1ales de dos productos qu\u00edmicos en la atm\u00f3sfera del planeta considerados durante mucho tiempo como \u00abbiofirmas\u00bb,\u00a0indicadoras de vida.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En la Tierra, las sustancias qu\u00edmicas dimetilsulfuro (DMS) y dimetil disulfuro (DMDS) son producidas \u00fanicamente por seres vivos, principalmente por las algas marinas microsc\u00f3picas llamadas fitoplancton y por bacterias.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<blockquote class=\"twitter-tweet\"><p lang=\"en\" dir=\"ltr\">Are we alone in the universe? Astronomers from <a href=\"https:\/\/twitter.com\/cambridge_astro?ref_src=twsrc%5Etfw\">@Cambridge_Astro<\/a> may be a step closer to finding out.<br> <br>Using data from <a href=\"https:\/\/twitter.com\/ESA_Webb?ref_src=twsrc%5Etfw\">@ESA_Webb<\/a>, they\u2019ve detected possible signs of life on exoplanet K2-18b \u2013 but they remain cautious.<br><br>Read more <a href=\"https:\/\/t.co\/SsV8KixqQP\">https:\/\/t.co\/SsV8KixqQP<\/a> <a href=\"https:\/\/t.co\/IkVFqFGCjn\">pic.twitter.com\/IkVFqFGCjn<\/a><\/p>&mdash; Cambridge University (@Cambridge_Uni) <a href=\"https:\/\/twitter.com\/Cambridge_Uni\/status\/1912763161238765981?ref_src=twsrc%5Etfw\">April 17, 2025<\/a><\/blockquote> <script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Aunque los investigadores enfatizaron que hay que ser cautos, las implicaciones podr\u00edan ser enormes, seg\u00fan Nikku Madhusudhan, astrof\u00edsico de la Universidad de Cambridge y autor principal\u00a0del estudio publicado en\u00a0<em>The Astrophysical Journal Letters.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00abLo que hemos hallado por el momento son indicios de una posible actividad biol\u00f3gica fuera del Sistema Solar\u00bb, declar\u00f3 en una conferencia de prensa.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">De acuerdo con el nuevo estudio, los cient\u00edficos pudieron establecer con un 99,7 % de certeza la existencia de vida, aunque se necesitar\u00eda alcanzar el 99,99994 % para hacer una declaraci\u00f3n definitiva sobre vida fuera de la Tierra.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00abFrancamente, creo que esto es lo m\u00e1s cerca que hemos estado de observar una caracter\u00edstica que podamos atribuir a la vida\u00bb, a\u00f1adi\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sin embargo, expertos ajenos al estudio destacaron que en el pasado ha habido disputas sobre otros descubrimientos relacionados\u00a0con este exoplaneta.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Esta presencia qu\u00edmica podr\u00eda haberse creado por medios desconocidos y sin relaci\u00f3n con la vida.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>K2-18b: caracter\u00edsticas del exoplaneta en zona habitable<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Con m\u00e1s de ocho veces la masa de la Tierra y un tama\u00f1o 2,5 veces mayor, K2-18b es un exoplaneta raro que orbita su estrella en una zona habitable, es decir, que no es ni demasiado caliente ni demasiado fr\u00edo para tener agua l\u00edquida, considerada ingrediente esencial para la vida.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Los astr\u00f3nomos pueden determinar la composici\u00f3n de la atm\u00f3sfera de un exoplaneta cuando cruza frente a su estrella, realizando la espectrograf\u00eda de la luz que atraves\u00f3 la envoltura gaseosa.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En 2023, el telescopio Webb\u00a0detect\u00f3 metano y di\u00f3xido de carbono en la atm\u00f3sfera de K2-18b.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Era la primera vez que ese tipo de mol\u00e9culas basadas en carbono eran detectadas en un exoplaneta en zona habitable.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tambi\u00e9n detect\u00f3 se\u00f1ales d\u00e9biles del compuesto qu\u00edmico DMS, lo que llev\u00f3 a los astr\u00f3nomos a enfocar al telescopio de nuevo sobre el planeta hace un a\u00f1o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Esta vez utilizaron sus instrumentos de infrarrojo de rango medio para detectar diferentes longitudes de onda de luz.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Los expertos encontraron se\u00f1ales mucho m\u00e1s fuertes de estas sustancias qu\u00edmicas, aunque todav\u00eda por debajo del umbral estad\u00edstico que permite garantizar la importancia cient\u00edfica de tales descubrimientos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Incluso si se confirman los resultados, no necesariamente significar\u00eda que el planeta alberga vida.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/static.dw.com\/image\/72269193_906.jpg\" alt=\"Los cient\u00edficos establecieron con un 99,7% de certeza la posible existencia de vida en K2-18b, aunque enfatizaron la necesidad de m\u00e1s observaciones.\"\/><figcaption class=\"wp-element-caption\">Los cient\u00edficos establecieron con un 99,7% de certeza la posible existencia de vida en K2-18b, aunque enfatizaron la necesidad de m\u00e1s observaciones.<small>Imagen: M. Kornmesser\/ESA\/HUBBLE\/AFP<\/small><\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">El a\u00f1o pasado cient\u00edficos encontraron trazas de DMS en un cometa, lo que sugiere que podr\u00eda producirse por v\u00edas no org\u00e1nicas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sin embargo, la concentraci\u00f3n\u00a0del qu\u00edmico observada en K2-18b\u00a0parece ser miles de veces m\u00e1s fuerte que en la Tierra, sugiriendo firmemente un origen biol\u00f3gico, afirm\u00f3 Madhusudhan.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Madhusudhan sugiri\u00f3 que, de confirmarse, el planeta podr\u00eda estar \u00abrebosante de vida\u00bb. \u00abSi confirmamos que hay vida en K2-18b, b\u00e1sicamente confirmar\u00edamos que la vida es muy com\u00fan en la galaxia\u00bb, explic\u00f3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Planeta hice\u00e1nico: potencial para albergar vida microbiana<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">K2-18b ha sido considerado durante mucho tiempo como el principal candidato para ser un \u00abplaneta hice\u00e1nico\u00bb: un mundo oce\u00e1nico m\u00e1s grande que la Tierra con una atm\u00f3sfera rica en hidr\u00f3geno.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">No se cree que estos planetas puedan albergar vida inteligente, sino m\u00e1s bien microbios similares a los presentes en los oc\u00e9anos terrestres hace miles de millones de a\u00f1os.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Algunas investigaciones han cuestionado si los planetas hice\u00e1nicos propuestos hasta ahora est\u00e1n demasiado cerca de sus estrellas para mantener agua l\u00edquida, incluido K2-18b, que orbita su estrella cada 33 d\u00edas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Raymond Pierrehumbert, profesor de f\u00edsica planetaria en la Universidad de Oxford, ha realizado investigaciones separadas indicando que K2-18b es demasiado caliente para albergar vida.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A su juicio, el escenario m\u00e1s plausible es que son oc\u00e9anos de lava.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sara Seager, profesora de ciencias planetarias en MIT, record\u00f3 por su parte que previamente se mencion\u00f3 rastros de vapor de agua en la atm\u00f3sfera de K2-18b que resultaron ser otro gas.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">El futuro de la b\u00fasqueda de vida extraterrestre con telescopios espaciales<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Madhusudhan estim\u00f3 que tan solo se necesitar\u00edan otras 16 a 24 horas adicionales del Telescopio Webb para confirmar sus hallazgos, y expres\u00f3 su esperanza de poder confirmar si hay vida dentro de uno o dos a\u00f1os. \u00abEs importante que seamos profundamente esc\u00e9pticos con respecto a nuestros propios resultados, porque solo probando una y otra vez podremos llegar al punto de tener confianza en ellos. As\u00ed es como debe funcionar la ciencia\u00bb, afirm\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00e1s all\u00e1 de K2-18b, Madhusudhan afirm\u00f3 que el Webb y futuros telescopios podr\u00edan permitirle a la humanidad descubrir vida fuera de la Tierra mucho antes de lo que uno podr\u00eda imaginar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00abEste podr\u00eda ser el punto crucial, donde de repente la cuesti\u00f3n fundamental de si estamos solos en el universo ser\u00e1 algo que podamos responder\u00bb, concluy\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>FEW (AFP, EFE, dpa,\u00a0The Astrophysical Journal Letters)<\/em><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\" style=\"font-size:17px\"><strong><i>Toda la informaci\u00f3n que necesitas saber la encuentras en nuestras <\/i><strong style=\"\"><em style=\"font-style: italic;\">redes sociales y canal de <\/em><\/strong><\/strong><a href=\"https:\/\/t.me\/informantemx\" target=\"_blank\" rel=\"noreferrer noopener\"><strong><em>Telegram<\/em><\/strong><\/a>. <\/p>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\" style=\"font-size:17px\"><strong><em>!\u00danete!<\/em><\/strong><\/p>\n\n\n\n<div class=\"wp-block-uagb-image aligncenter uagb-block-3acd28e8 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-zoomin wp-block-uagb-image--align-center\"><figure class=\"wp-block-uagb-image__figure\"><a class=\"\" href=\"https:\/\/t.me\/informantemx\" target=\"\" rel=\"noopener\"><img decoding=\"async\" srcset=\"https:\/\/informante.mx\/wp-content\/uploads\/2023\/08\/Banner-Telegram-Verde-800x60-1.png ,https:\/\/informante.mx\/wp-content\/uploads\/2023\/08\/Banner-Telegram-Verde-800x60-1.png 780w, https:\/\/informante.mx\/wp-content\/uploads\/2023\/08\/Banner-Telegram-Verde-800x60-1.png 360w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/informante.mx\/wp-content\/uploads\/2023\/08\/Banner-Telegram-Verde-800x60-1.png\" alt=\"\" class=\"uag-image-23275\" width=\"800\" height=\"60\" title=\"\" loading=\"lazy\" role=\"img\"\/><\/a><\/figure><\/div>\n\n\n\n<div class=\"wp-block-uagb-image aligncenter uagb-block-45ea2b31 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-zoomin wp-block-uagb-image--align-center\"><figure class=\"wp-block-uagb-image__figure\"><a class=\"\" href=\"https:\/\/www.facebook.com\/MX.Informante\" target=\"\" rel=\"noopener\"><img decoding=\"async\" srcset=\"https:\/\/informante.mx\/wp-content\/uploads\/2023\/08\/Banner-Facebook-Verde-800x60-1.png ,https:\/\/informante.mx\/wp-content\/uploads\/2023\/08\/Banner-Facebook-Verde-800x60-1.png 780w, https:\/\/informante.mx\/wp-content\/uploads\/2023\/08\/Banner-Facebook-Verde-800x60-1.png 360w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/informante.mx\/wp-content\/uploads\/2023\/08\/Banner-Facebook-Verde-800x60-1.png\" alt=\"\" class=\"uag-image-23274\" width=\"800\" height=\"60\" title=\"\" loading=\"lazy\" role=\"img\"\/><\/a><\/figure><\/div>\n\n\n\n<div class=\"wp-block-uagb-image aligncenter uagb-block-2ce4c51b wp-block-uagb-image--layout-default wp-block-uagb-image--effect-zoomin wp-block-uagb-image--align-center\"><figure class=\"wp-block-uagb-image__figure\"><a class=\"\" href=\"https:\/\/twitter.com\/mx_informante\" target=\"\" rel=\"noopener\"><img decoding=\"async\" srcset=\"https:\/\/informante.mx\/wp-content\/uploads\/2023\/08\/Banner-Twitter-Verde-800x60-1.png ,https:\/\/informante.mx\/wp-content\/uploads\/2023\/08\/Banner-Twitter-Verde-800x60-1.png 780w, https:\/\/informante.mx\/wp-content\/uploads\/2023\/08\/Banner-Twitter-Verde-800x60-1.png 360w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/informante.mx\/wp-content\/uploads\/2023\/08\/Banner-Twitter-Verde-800x60-1.png\" alt=\"\" class=\"uag-image-23273\" width=\"800\" height=\"60\" title=\"\" loading=\"lazy\" role=\"img\"\/><\/a><\/figure><\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>K2-18b nos acerca a responder la gran pregunta: \u00bfestamos solos? Sus biofirmas, detectadas con 99,7% de certeza, emocionan a cient\u00edficos que a\u00fan buscan pruebas concluyentes.<\/p>\n","protected":false},"author":1,"featured_media":47635,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":"","jetpack_post_was_ever_published":false},"categories":[12],"tags":[40],"class_list":["post-47634","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mundo","tag-mundo"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Hallan mayor indicio de vida extraterrestre hasta la fecha - Informante.mx<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/informante.mx\/?p=47634\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hallan mayor indicio de vida extraterrestre hasta la fecha - Informante.mx\" \/>\n<meta property=\"og:description\" content=\"K2-18b nos acerca a responder la gran pregunta: \u00bfestamos solos? 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