{"id":11099,"date":"2025-04-29T11:01:31","date_gmt":"2025-04-29T08:01:31","guid":{"rendered":"https:\/\/uni-mag.gr\/?p=11099"},"modified":"2025-04-29T11:01:40","modified_gmt":"2025-04-29T08:01:40","slug":"la-galaxia-que-lleva-un-anillo","status":"publish","type":"post","link":"https:\/\/www.uni-mag.gr\/es\/la-galaxia-que-lleva-un-anillo\/","title":{"rendered":"La galaxia que lleva un anillo"},"content":{"rendered":"\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<h4 class=\"wp-block-heading\">Un anillo de Einstein perfecto en la galaxia NGC 6505<\/h4>\n\n<p class=\"wp-block-paragraph\">Algunas galaxias llevan su misterio como una joya \u2014 y NGC 6505 acaba de revelar su accesorio m\u00e1s c\u00f3smico.<\/p>\n\n<p class=\"wp-block-paragraph\">A simple vista, NGC 6505 parece una galaxia el\u00edptica com\u00fan, observada por primera vez en el siglo XIX en la constelaci\u00f3n del Drag\u00f3n. Pero una nueva imagen tomada por el telescopio espacial Euclid lo cambia todo. En el centro de esta galaxia se encuentra algo que nunca se hab\u00eda visto antes en ella: <strong>un anillo de Einstein<\/strong> perfecto \u2014 y est\u00e1 dando mucho de qu\u00e9 hablar.  <\/p>\n\n<p class=\"wp-block-paragraph\">\u00bfSignifica esto que hay otra galaxia <em>dentro<\/em> de NGC 6505? No exactamente. Pero definitivamente lo parece.  <\/p>\n\n<h3 class=\"wp-block-heading\">Una ilusi\u00f3n \u00f3ptica o una ventana al pasado lejano?<\/h3>\n\n<p class=\"wp-block-paragraph\">No se trata de mu\u00f1ecas rusas c\u00f3smicas. Lo que vemos es un fen\u00f3meno llamado <strong>lente gravitacional<\/strong>, donde la luz de un objeto distante se curva por la gravedad de un objeto masivo que est\u00e1 delante \u2014 en este caso, NGC 6505. <\/p>\n\n<p class=\"wp-block-paragraph\">\u00bfEl resultado? Un anillo luminoso casi perfecto formado por la luz de una galaxia mucho m\u00e1s lejana, perfectamente alineada con NGC 6505 y distorsionada en esta forma espectacular. <\/p>\n\n<p class=\"wp-block-paragraph\">Mira la imagen aqu\u00ed:<br\/><a class=\"\" href=\"https:\/\/www.aanda.org\/articles\/aa\/full_html\/2025\/02\/aa53014-24\/F1.html\">Anillo de Einstein en NGC 6505 (enlace a imagen)<\/a><\/p>\n\n<h3 class=\"wp-block-heading\">\u00bfQu\u00e9 papel juega Euclid?<\/h3>\n\n<p class=\"wp-block-paragraph\">Lanzado en 2023, Euclid es un telescopio espacial con una gran misi\u00f3n: descubrir los secretos de la materia oscura, la energ\u00eda oscura y la expansi\u00f3n del universo. Lo hace gracias a instrumentos ultra precisos y una \u201csuperpotencia\u201d llamada lente gravitacional. <\/p>\n\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.uni-mag.gr\/wp-content\/uploads\/2025\/04\/issue-12-What_Euclid_will_measure_weak_lensing_pillars-1024x576.png\" alt=\"\" class=\"wp-image-11086\" srcset=\"https:\/\/www.uni-mag.gr\/wp-content\/uploads\/2025\/04\/issue-12-What_Euclid_will_measure_weak_lensing_pillars-1024x576.png 1024w, https:\/\/www.uni-mag.gr\/wp-content\/uploads\/2025\/04\/issue-12-What_Euclid_will_measure_weak_lensing_pillars-300x169.png 300w, https:\/\/www.uni-mag.gr\/wp-content\/uploads\/2025\/04\/issue-12-What_Euclid_will_measure_weak_lensing_pillars-768x432.png 768w, https:\/\/www.uni-mag.gr\/wp-content\/uploads\/2025\/04\/issue-12-What_Euclid_will_measure_weak_lensing_pillars-1536x864.png 1536w, https:\/\/www.uni-mag.gr\/wp-content\/uploads\/2025\/04\/issue-12-What_Euclid_will_measure_weak_lensing_pillars.png 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">Este fen\u00f3meno fue confirmado por primera vez en 1919 durante un eclipse solar, cuando Arthur Eddington observ\u00f3 c\u00f3mo la posici\u00f3n de las estrellas parec\u00eda cambiar debido a la gravedad del Sol. Fue uno de los primeros triunfos de la teor\u00eda general de la relatividad de Einstein. <\/p>\n\n<p class=\"wp-block-paragraph\">Hoy, gracias a la aguda visi\u00f3n de Euclid, vemos estas distorsiones con mayor frecuencia \u2014 y cada una nos ayuda a comprender mejor la estructura invisible del universo.<\/p>\n\n<h3 class=\"wp-block-heading\">\u00bfQu\u00e9 estamos viendo realmente?<\/h3>\n\n<p class=\"wp-block-paragraph\">Ese anillo brillante no forma parte de NGC 6505. Es la luz ampliada y distorsionada de una galaxia que se encuentra a <strong>4,42 mil millones de a\u00f1os luz<\/strong> detr\u00e1s \u2014 una alineaci\u00f3n perfecta que nos permite mirar a trav\u00e9s de esta lupa c\u00f3smica. <\/p>\n\n<p class=\"wp-block-paragraph\">Con este anillo, los cient\u00edficos pueden reconstruir c\u00f3mo es realmente esa galaxia lejana y estudiar su historia de formaci\u00f3n estelar, as\u00ed como la materia oscura que rodea a NGC 6505.<\/p>\n\n<h3 class=\"wp-block-heading\">\u00bfY ahora qu\u00e9?<\/h3>\n\n<p class=\"wp-block-paragraph\">Cada anillo de Einstein no es solo una imagen bonita. Es una pista. Una pieza de rompecabezas que puede ayudarnos a entender lo invisible \u2014 desde los halos de materia oscura hasta el destino del propio universo.  <\/p>\n\n<p class=\"wp-block-paragraph\">La gran pregunta es:<br\/>Si un solo anillo puede revelar tanto, \u00bfqu\u00e9 m\u00e1s descubrir\u00e1 Euclid?<\/p>\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p class=\"card-text\">A simple vista, NGC 6505 parece una galaxia el\u00edptica com\u00fan, observada por primera vez en el siglo XIX en la constelaci\u00f3n del Drag\u00f3n. [&#8230;]<\/p>\n<p class=\"m-0\"><a class=\"btn btn-outline-secondary btn-read-more\" href=\"https:\/\/www.uni-mag.gr\/es\/la-galaxia-que-lleva-un-anillo\/\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":11093,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[772,769,2660],"tags":[2699,2694,1884,2701,797,2700,2703,2696,2695,785,2702,2697,2698,2635],"class_list":["post-11099","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-que-es","category-issues-es","category-issue-12-es","tag-albert-einstein-es","tag-anillo-de-einstein","tag-astrofisica","tag-distorsion-de-la-luz","tag-energia-oscura","tag-expansion-cosmica","tag-fenomenos-gravitacionales","tag-galaxia-ngc-6505","tag-lente-gravitacional","tag-materia-oscura","tag-observacion-de-galaxias","tag-telescopio-euclid","tag-teoria-de-la-relatividad","tag-universo-es"],"yoast_head":"<!-- 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