{"id":164956,"date":"2026-04-29T21:07:40","date_gmt":"2026-04-29T21:07:40","guid":{"rendered":"http:\/\/69f230e6cc158c1f9082c443"},"modified":"2026-04-29T21:07:40","modified_gmt":"2026-04-29T21:07:40","slug":"la-via-lactea-si-tiene-un-borde-y-esta-mas-cerca-de-lo-que-creiamos","status":"publish","type":"post","link":"https:\/\/sarmiento24h.com\/?p=164956","title":{"rendered":"La V\u00eda L\u00e1ctea s\u00ed tiene un borde, y est\u00e1 m\u00e1s cerca de lo que cre\u00edamos"},"content":{"rendered":"<p>Definir el borde de la V\u00eda L\u00e1ctea dista mucho de ser sencillo. Su disco de formaci\u00f3n estelar no termina abruptamente, sino que se desvanece gradualmente en el espacio. Por primera vez, un equipo de investigaci\u00f3n internacional ha logrado identificar con precisi\u00f3n el borde de la V\u00eda L\u00e1ctea mediante el estudio de las edades de sus estrellas y el descubrimiento de que la mayor parte de la formaci\u00f3n estelar en nuestra galaxia ocurre a unos 40, 000 a\u00f1os luz del centro gal\u00e1ctico.<\/p>\n<p>Los detalles de este nuevo <a data-offer-url=\"https:\/\/www.aanda.org\/articles\/aa\/full_html\/2026\/04\/aa58144-25\/aa58144-25.html\" class=\"external-link\" data-event-click=\"{&quot;element&quot;:&quot;ExternalLink&quot;,&quot;outgoingURL&quot;:&quot;https:\/\/www.aanda.org\/articles\/aa\/full_html\/2026\/04\/aa58144-25\/aa58144-25.html&quot;}\" href=\"https:\/\/www.aanda.org\/articles\/aa\/full_html\/2026\/04\/aa58144-25\/aa58144-25.html\" rel=\"nofollow noopener\" target=\"_blank\">estudio<\/a> se publicaron en la revista <em>Astronomy and Astrophysics.<\/em><\/p>\n<h2>\u00bfC\u00f3mo crecen las galaxias?<\/h2>\n<p><a href=\"https:\/\/es.wired.com\/articulos\/olvidate-de-los-ovnis-donde-estan-las-civilizaciones-que-dominan-galaxias-este-estudio-profundiza-en-ello\">Las galaxias<\/a> no forman estrellas de manera uniforme. En muchas galaxias de disco, la formaci\u00f3n estelar ocurre de dentro hacia afuera: las regiones centrales tienden a contener estrellas m\u00e1s antiguas, mientras que en las zonas externas pueden encontrarse estrellas m\u00e1s j\u00f3venes porque la formaci\u00f3n estelar contin\u00faa all\u00ed durante m\u00e1s tiempo.<\/p>\n<p>La <a href=\"https:\/\/es.wired.com\/articulos\/centro-de-la-via-lactea-es-un-nucleo-de-materia-oscura-no-un-agujero-negro-propone-estudio\">V\u00eda L\u00e1ctea<\/a> sigue este patr\u00f3n hasta cierto punto: la edad promedio de las estrellas disminuye a medida que uno se aleja del centro, pero a unos 35-40 mil a\u00f1os luz del <a href=\"https:\/\/es.wired.com\/articulos\/el-centro-de-la-galaxia-podria-esconder-un-pulsar-clave-para-entender-la-curvatura-del-espacio-tiempo\">centro gal\u00e1ctico<\/a>, esta tendencia se invierte, y las estrellas comienzan a envejecer nuevamente con la distancia, formando el caracter\u00edstico perfil de edad en forma de U.<\/p>\n<p>\u00abLa extensi\u00f3n del disco de formaci\u00f3n estelar de la V\u00eda L\u00e1ctea ha sido durante mucho tiempo una inc\u00f3gnita en la arqueolog\u00eda gal\u00e1ctica; al mapear c\u00f3mo cambia la edad de las estrellas dentro del disco, ahora tenemos una respuesta clara y cuantitativa\u00bb, coment\u00f3 el autor Karl Fiteni.<\/p>\n<div class=\"ContentCardEmbedWrapper-hkvhYu kMYDit content-card-embed content-card-embed--stacked\" data-testid=\"ContentCardEmbedWrapper\" readability=\"24.145768025078\">\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=\"Una V\u00eda L\u00e1ctea reflejada en un espejo. \" loading=\"lazy\" class=\"ResponsiveImageContainer-dkeESL cQPiWi responsive-image__image\" srcset=\"https:\/\/media.es.wired.com\/photos\/697a6452aff14584daf793f3\/master\/w_120,c_limit\/GettyImages-525427564.jpg 120w, https:\/\/media.es.wired.com\/photos\/697a6452aff14584daf793f3\/master\/w_240,c_limit\/GettyImages-525427564.jpg 240w, https:\/\/media.es.wired.com\/photos\/697a6452aff14584daf793f3\/master\/w_320,c_limit\/GettyImages-525427564.jpg 320w, https:\/\/media.es.wired.com\/photos\/697a6452aff14584daf793f3\/master\/w_640,c_limit\/GettyImages-525427564.jpg 640w\" sizes=\"100vw\" src=\"https:\/\/media.es.wired.com\/photos\/697a6452aff14584daf793f3\/master\/w_775%2Cc_limit\/GettyImages-525427564.jpg\"><\/picture><\/span><\/div>\n<div class=\"ContentCardEmbedInfo-buyHWH gWLOee\" readability=\"26.003134796238\">\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\/nadie-esperaba-esto-asi-se-agrupa-la-materia-oscura-alrededor-de-la-via-lactea\" data-testid=\"ContentCardEmbedHedLink\">Nadie esperaba esto: as\u00ed se agrupa la materia oscura alrededor de la V\u00eda L\u00e1ctea<\/a><\/div>\n<p>Una simulaci\u00f3n revela que la materia oscura del Grupo Local no forma un halo esf\u00e9rico, sino una enorme l\u00e1mina que nos envuelve. Esta geometr\u00eda explica por qu\u00e9 las galaxias cercanas siguen expandi\u00e9ndose casi sin freno gravitacional.<\/p>\n<\/div>\n<\/div>\n<h2>El borde m\u00e1s externo de la V\u00eda L\u00e1ctea<\/h2>\n<p>En el nuevo estudio, los investigadores analizaron m\u00e1s de 100,000 estrellas gigantes, utilizando datos espectrosc\u00f3picos de los sondeos Lamost y Apogee, junto con mediciones del <a href=\"https:\/\/es.wired.com\/articulos\/el-telescopio-gaia-de-la-esa-nos-muestra-la-forma-ondulada-de-la-via-lactea-como-nunca-antes\">sat\u00e9lite Gaia.<\/a> Luego combinaron la distribuci\u00f3n de edades en forma de U con simulaciones avanzadas de la evoluci\u00f3n gal\u00e1ctica, determinando que el punto en el que las edades estelares son m\u00e1s j\u00f3venes corresponde a una reducci\u00f3n en la eficiencia de formaci\u00f3n estelar a unos 40&nbsp;000 a\u00f1os luz del centro. Esto confirma que este es el verdadero borde del disco de <a href=\"https:\/\/es.wired.com\/articulos\/la-via-lactea-podria-estar-rodeada-de-pequenas-galaxias-invisibles\">formaci\u00f3n estelar de la V\u00eda L\u00e1ctea<\/a> y que m\u00e1s all\u00e1 de este, <a href=\"https:\/\/es.wired.com\/articulos\/estrellas-de-neutrones-y-origenes-del-universo\">las estrellas<\/a> est\u00e1n migrando.<\/p>\n<p>\u00abLos datos disponibles nos permiten obtener edades estelares cada vez m\u00e1s precisas, que se convierten en herramientas poderosas para descifrar <a href=\"https:\/\/es.wired.com\/articulos\/mientras-la-tierra-atravesaba-su-juventud-una-galaxia-choco-contra-la-via-lactea-segun-nuevo-informe\">la historia de la V\u00eda L\u00e1ctea<\/a>, inaugurando una nueva era de descubrimientos sobre <a href=\"https:\/\/es.wired.com\/articulos\/nueva-imagen-expansiva-de-la-via-lactea-te-permite-explorar-nuestra-galaxia-como-nunca-antes\">nuestra galaxia<\/a>\u00ab, coment\u00f3 el coautor Joseph Caruana.<\/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=\"Esquema que muestra las mediciones para el centro galctico.\" loading=\"lazy\" class=\"ResponsiveImageContainer-dkeESL cQPiWi responsive-image__image\" srcset=\"https:\/\/media.es.wired.com\/photos\/69f230e5f3ec65faf83f191a\/master\/w_120,c_limit\/Low-Res_pr_image.jpg 120w, https:\/\/media.es.wired.com\/photos\/69f230e5f3ec65faf83f191a\/master\/w_240,c_limit\/Low-Res_pr_image.jpg 240w, https:\/\/media.es.wired.com\/photos\/69f230e5f3ec65faf83f191a\/master\/w_320,c_limit\/Low-Res_pr_image.jpg 320w, https:\/\/media.es.wired.com\/photos\/69f230e5f3ec65faf83f191a\/master\/w_640,c_limit\/Low-Res_pr_image.jpg 640w, https:\/\/media.es.wired.com\/photos\/69f230e5f3ec65faf83f191a\/master\/w_960,c_limit\/Low-Res_pr_image.jpg 960w, https:\/\/media.es.wired.com\/photos\/69f230e5f3ec65faf83f191a\/master\/w_1280,c_limit\/Low-Res_pr_image.jpg 1280w, https:\/\/media.es.wired.com\/photos\/69f230e5f3ec65faf83f191a\/master\/w_1600,c_limit\/Low-Res_pr_image.jpg 1600w\" sizes=\"100vw\" src=\"https:\/\/media.es.wired.com\/photos\/69f230e5f3ec65faf83f191a\/master\/w_1600%2Cc_limit\/Low-Res_pr_image.jpg\"><\/picture><\/span><\/div>\n<div class=\"CaptionWrapper-bpPcvW iDPSlt caption AssetEmbedCaption-eZIMNW gMgneI asset-embed__caption\" data-testid=\"caption-wrapper\" readability=\"6.5\"><span class=\"BaseText-fEwdHD CaptionText-cQpRdU kRTNAB hbiMYj caption__text\" readability=\"28\"><\/p>\n<p>Esquema que muestra las mediciones para el centro gal\u00e1ctico. Azul: estrellas m\u00e1s j\u00f3venes en medio del disco. Naranja\/ Rojo: viejas estrellas migrando.<\/p>\n<p><\/span><span class=\"BaseText-fEwdHD CaptionCredit-cUgOGk iQbGEh hRFzlA caption__credit\">Cortes\u00eda: Joseph Caruana, Universidad de Malta<\/span><\/div>\n<\/figure>\n<h2>\u00bfQu\u00e9 controla el borde?<\/h2>\n<p>Aunque el borde de la V\u00eda L\u00e1ctea ya est\u00e1 claro, la raz\u00f3n por la que la formaci\u00f3n estelar disminuye a esa distancia sigue siendo un misterio. Entre las posibles causas que barajan los investigadores se encuentran la barra central de <a href=\"https:\/\/es.wired.com\/articulos\/identifican-dos-bloques-de-la-via-lactea-shiva-y-shakti\">la V\u00eda L\u00e1ctea<\/a>, cuya influencia gravitacional podr\u00eda provocar la acumulaci\u00f3n de gas en ciertos radios, o la curvatura exterior de la galaxia , donde el disco se curva y podr\u00eda alterar las condiciones necesarias para <a href=\"https:\/\/es.wired.com\/articulos\/el-agua-del-cometa-3i-atlas-es-mas-rara-de-lo-que-pensabamos\">la formaci\u00f3n estelar.<\/a><\/p>\n<p>Si bien la causa exacta a\u00fan se investiga, el nuevo estudio confirma que el patr\u00f3n de <a href=\"https:\/\/es.wired.com\/articulos\/hl-tauri-la-estrella-bebe-de-la-que-todos-estan-hablando\">edad estelar<\/a> en forma de U es un indicador fiable del borde de formaci\u00f3n estelar de la V\u00eda L\u00e1ctea. \u00abEn astrof\u00edsica, utilizamos simulaciones con <a href=\"https:\/\/es.wired.com\/articulos\/conoce-las-10-supercomputadoras-mas-potentes-del-mundo\">supercomputadoras<\/a> para identificar los mecanismos f\u00edsicos responsables de las caracter\u00edsticas que observamos en <a href=\"https:\/\/es.wired.com\/articulos\/confirman-por-primera-vez-una-galaxia-invisible-esta-conformada-en-un-999-por-materia-oscura\">las galaxias<\/a>\u00ab, concluy\u00f3 el coautor Jo\u00e3o As Amarante. A\u00f1ade: \u00abEn este estudio, hemos demostrado c\u00f3mo la migraci\u00f3n estelar moldea el perfil de edad del disco y hemos identificado d\u00f3nde termina la regi\u00f3n de formaci\u00f3n estelar\u00bb.<\/p>\n<p><em>Art\u00edculo originalmente publicado en<\/em> <a href=\"https:\/\/www.wired.com\/story\/wired-health-2026-tackling-antimicrobial-resistance-ara-darzi\/\">WIRED Italia.<\/a> <em>Adaptado por Alondra Flores.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Definir el borde de la V\u00eda L\u00e1ctea&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":164957,"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-164956","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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